Das Periodensystem der Elemente online
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pKs-Werte
pKs-Werte
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Alphabetisch
Ordnungszahl
pKs-Werte
#
OZ
Name
pKs-Werte
1.
6
Propan (C
3
H
8
)
51
2.
6
Ethan (C
2
H
6
)
50
3.
6
Methan (CH
4
)
44
4.
6
Ethen (C
2
H
4
)
44
5.
6
Propen (C
3
H
6
)
43
6.
1
Wasserstoff (H
2
)
39
7.
7
Ammoniak (NH
3
)
35
8.
14
Silan (SiH
4
)
35
9.
8
Hydroxid-Ion (OH
-
)
29
10.
15
Diphosphan (P
2
H
4
)
26
11.
32
German (GeH
4
)
25
12.
7
Hydrazin (N
2
H
4
)
24.7
13.
15
Phosphan (PH
3
)
23
14.
6
Ethin (C
2
H
2
)
22
15.
33
Arsan (AsH
3
)
20
16.
8
t-Butanol ((CH
3
)
3
COH)
19
17.
8
Isopropanol (CH
3
(CHOH)CH
3
)
17.1
18.
8
Hydrogenperoxid-Ion (HO
2
-
)
16.8
19.
8
Propanol (C
3
H
7
OH)
16.2
20.
79
Pentahydroxo-Aurat(III)-Ion (Au(OH)
5
2-
)
16
21.
8
Ethanol (C
2
H
5
OH)
15.9
22.
55
Cäsium-Ion (Cs
+
)
15.76
23.
8
Wasser (H
2
O)
15.76
24.
87
Francium-Ion (Fr
+
)
15.76
25.
8
Methanol (CH
3
OH)
15.54
26.
37
Rubidium-Ion (Rb
+
)
15.4
27.
19
Kalium-Ion (K
+
)
15.1
28.
53
Hydrogenperiodat-Ion (HIO
6
4-
)
15
29.
54
Hydrogenxenonat(VIII) (HXeO
6
3-
)
15
30.
32
Hydrogenorthogermanat-Ion (HGeO
4
3-
)
15
31.
26
Trihydroxo-Ferrat(II)-Ion (Fe(OH)
3
-
)
15
32.
32
Dihydrogenorthogermanat-Ion (H
2
GeO
4
2-
)
15
33.
27
Trihydroxo-Cobaltat(II)-Ion (Co(OH)
3
-
)
14.8
34.
80
Quecksilber(II)hydroxid (Hg(OH)
2
)
14.77
35.
11
Natrium-Ion (Na
+
)
14.56
36.
6
Ethanal (CH
3
CHO)
14.5
37.
52
Tetrahydrogenorthotellurat-Ion (H
4
TeO
6
2-
)
14.25
38.
76
Hydrogenperosmat(VIII)-Ion (HOsO
6
3-
)
14.17
39.
14
Hydrogenorthosilicat-Ion (HSiO
4
3-
)
14
40.
25
Mangan(II)hydroxid (Mn(OH)
2
)
14
41.
26
Hydrogentetracarbonylferrat(-II)-Ion (HFe(CO)
4
-
)
14
42.
88
Hydroxo-Radium-Ion (Ra(OH)
+
)
14
43.
33
Hydrogenarsenit-Ion (HAsO
3
2-
)
13.98
44.
76
Dihydrogenperosmat(VIII)-Ion (H
2
OsO
6
2-
)
13.95
45.
56
Hydroxo-Barium-Ion (Ba(OH)
+
)
13.85
46.
3
Lithium-Ion (Li
+
)
13.82
47.
92
Trihydroxo-Uranat(VI)-Ion (UO
2
(OH)
3
-
)
13.8
48.
48
Trihydroxo-Cadmat-Ion (Cd(OH)
3
-
)
13.72
49.
38
Hydroxo-Strontium-Ion (Sr(OH)
+
)
13.7
50.
57
Lanthanhydroxid (La(OH)
3
)
13.70
51.
7
Hydroxylamin (NH
2
OH)
13.7
52.
28
Trihydroxoniccolat(II)-Ion (Ni(OH)
3
-
)
13.67
53.
4
Trihydroxo-Beryllat-Ion (Be(OH)
3
-
)
13.54
54.
33
Dihydrogenarsenit-Ion (H
2
AsO
3
-
)
13.52
55.
46
Trihydroxo-Palladat(II)-Ion (Pd(OH)
3
-
)
13.43
56.
88
Radium-Ion (Ra
2+
)
13.40
57.
56
Barium-Ion (Ba
2+
)
13.36
58.
81
Thallium(I)-Ion (Tl
+
)
13.36
59.
53
Dihydrogenorthoperiodat-Ion (H
2
IO
6
3-
)
13.3
60.
79
Tetrahydroxo-Aurat(III)-Ion (Au(OH)
4
-
)
13.3
61.
6
Methanal (HCHO)
13.3
62.
23
Hydrogenorthovanadat(V)-Ion (HVO
4
2-
)
13.27
63.
38
Strontium-Ion (Sr
2+
)
13.17
64.
29
Hydrogencuprat(II)-Ion (HCuO
2
-
)
13.1
65.
14
Dihydrogenorthosilicat-Ion (H
2
SiO
4
2-
)
13
66.
16
Hydrogensulfid-Ion (HS
-
)
12.92
67.
48
Cadmiumhydroxid (Cd(OH)
2
)
12.82
68.
15
Hydrogenperoxophosphat-Ion (HPO
5
2-
)
12.8
69.
32
Hydrogenmetagermanat-Ion (HGeO
3
-
)
12.72
70.
83
Wismut(III)hydroxid (Bi(OH)
3
)
12.72
71.
32
Trihydrogenorthogermanat-Ion (H
3
GeO
4
-
)
12.7
72.
20
Hydroxo-Calcium-Ion (Ca(OH)
+
)
12.63
73.
63
Europium(II)-Ion (Eu
2+
)
12.5
74.
79
Gold(I)hydroxid (AuOH)
12.4
75.
27
Kobalt(II)hydroxid (Co(OH)
2
)
12.4
76.
6
Salicylat(-)-Ion (C
6
H
4
(OH)COO
-
)
12.38
77.
15
Hydrogenphosphat-Ion (HPO
4
2-
)
12.36
78.
93
Neptunyl(V)hydroxid (NpO
2
(OH))
12.3
79.
12
Hydroxo-Magnesium-Ion (Mg(OH)
+
)
12.20
80.
76
Trihydrogenperosmat(VIII)-Ion (H
3
OsO
6
-
)
12.2
81.
47
Silberhydroxid (AgOH)
12.2
82.
70
Ytterbium(II)-Ion (Yb
2+
)
12.1
83.
58
Cer(III)hydroxid (Ce(OH)
3
)
12.10
84.
8
Isopropylhydroperoxid (CH
3
(CHOOH)CH
3
)
12.1
85.
30
Trihydroxo-Zincat-Ion (Zn(OH)
3
-
)
12.07
86.
25
Hydroxo-Mangan(II)-Ion (Mn(OH)
+
)
12
87.
26
Eisen(II)hydroxid (Fe(OH)
2
)
11.93
88.
49
Indium(I)-Ion (In
+
)
11.83
89.
51
Antimon(III)hydroxid (Sb(OH)
3
)
11.82
90.
8
Ethylhydroperoxid (C
2
H
5
OOH)
11.8
91.
79
Gold(III)hydroxid (Au(OH)
3
)
11.8
92.
14
Trihydrogenorthosilicat-Ion (H
3
SiO
4
-
)
11.77
93.
14
Hydrogenmetasilicat-Ion (HSiO
3
-
)
11.77
94.
81
Thallium(III)hydroxid (Tl(OH)
3
)
11.70
95.
8
Wasserstoffperoxid (H
2
O
2
)
11.62
96.
53
Trihydrogenorthoperiodat-Ion (H
3
IO
6
2-
)
11.6
97.
20
Calcium-Ion (Ca
2+
)
11.57
98.
7
Hydrogenhyponitrit-Ion (H(NO)
2
-
)
11.54
99.
33
Hydrogenarsenat-Ion (HAsO
4
2-
)
11.53
100.
47
Silber(I)ion (Ag
+
)
11.5
101.
8
Methylhydroperoxid (CH
3
OOH)
11.5
102.
12
Magnesium-Ion (Mg
2+
)
11.44
103.
93
Neptunyl(V)-Ion (NpO
2
+
)
11.3
104.
82
Trihydroxo-Plumbat(II)-Ion (Pb(OH)
3
-
)
11.27
105.
13
Aluminiumhydroxid (Al(OH)
3
)
11.22
106.
44
Perrutheniumsäure (H
2
RuO
5
)
11.20
107.
91
Dihydroxo-Protactinyl(V)-Ion (PaO(OH)
2
+
)
11.19
108.
89
Dihydroxo-Actinium-Ion (Ac(OH)
2
+
)
11.1
109.
94
Dihydroxo-Plutonium(III)-Ion (Pu(OH)
2
+
)
11.1
110.
95
Dihydroxo-Americium(III)-Ion (Am(OH)
2
+
)
11.10
111.
96
Dihydroxo-Curium(III)-Ion (Cm(OH)
2
)
11.1
112.
46
Palladium(II)hydroxid (Pd(OH)
2
)
11.09
113.
26
Hydroxo-Eisen(II)-Ion (Fe(OH)
+
)
11.07
114.
7
Triethylammonium-Ion ((C
2
H
5
)
3
NH
+
)
11.01
115.
43
Technetyl(IV)hydroxid (TcO(OH)
2
)
11
116.
34
Hydrogenselenid-Ion (HSe
-
)
11
117.
62
Samarium(III)hydroxid (Sm(OH)
3
)
11
118.
33
Hydrogenthioarsenat-Ion (HAsSO
3
2-
)
11
119.
52
Pentahydrogenorthotellurat-Ion (H
5
TeO
6
-
)
10.95
120.
7
Dipropylammonium-Ion ((C
3
H
7
)
2
NH
2
+
)
10.91
121.
33
Hydrogenthioarsenat-Ion (HAsS
2
O
2
2-
)
10.9
122.
82
Blei(II)hydroxid (Pb(OH)
2
)
10.88
123.
28
Nickel(II)hydroxid (Ni(OH)
2
)
10.88
124.
7
Ethylammonium-Ion (C
2
H
5
NH
3
+
)
10.81
125.
33
Hydrogentrithioarsenat-Ion (H
2
AsOS
3
2-
)
10.8
126.
7
Dimethylammonium-Ion ((CH
3
)
2
NH
2
+
)
10.73
127.
60
Neodym(III)hydroxid (Nd(OH)
3
)
10.7
128.
52
Hydrogentellurid-Ion (HTe
-
)
10.69
129.
7
Tripropylammonium-Ion ((C
3
H
7
)
3
NH
+
)
10.66
130.
16
Butanthiol (C
4
H
9
SH)
10.66
131.
7
Methylammonium-Ion (CH
3
NH
3
+
)
10.66
132.
16
Propanthiol (C
3
H
7
SH)
10.65
133.
53
Hypoiodige Säure (HOI)
10.64
134.
6
Hydrogenperoxocarbonat-Ion (HCO(O
2
)
-
)
10.6
135.
25
Mangan(II)-Ion (Mn
2+
)
10.59
136.
7
Propylammonium-Ion (C
3
H
7
NH
3
+
)
10.57
137.
54
Xenon(VI)säure (H
2
XeO
4
)
10.5
138.
54
Dihydrogenxenonat(VIII)-Ion (H
2
XeO
6
2-
)
10.5
139.
39
Yttriumhydroxid (Y(OH)
3
)
10.5
140.
16
Ethanthiol (C
2
H
5
SH)
10.50
141.
7
Diethylammonium-Ion ((C
2
H
5
)
2
NH
2
+
)
10.49
142.
4
Berylliumhydroxid (Be(OH)
2
)
10.46
143.
48
Hydroxo-Cadmium-Ion (Cd(OH)
2+
)
10.40
144.
16
Methanthiol (CH
3
SH)
10.4
145.
6
Hydrogencarbonat-Ion (HCO
3
-
)
10.4
146.
28
Hydroxo-Nickel(II)-Ion (Ni(OH)
+
)
10.22
147.
7
Nitromethan (NO
2
CH
3
)
10.2
148.
25
Hydrogenmanganat(VI)-Ion (HMnO
4
-
)
10.15
149.
30
Zinkhydroxid (Zn(OH)
2
)
10.11
150.
15
Hydrogenthiophosphat-Ion (HPSO
3
2-
)
10.08
151.
15
Hydrogenhypodiphosphat-Ion (HP
2
O
6
3-
)
10.03
152.
24
Chrom(II)-Ion (Cr
2+
)
10.0
153.
29
Kupfer(II)hydroxid (Cu(OH)
2
)
10
154.
8
Phenol (C
6
H
5
OH)
9.99
155.
50
Pentahydroxo-Stannat(IV)-Ion (Sn(OH)
5
-
)
9.99
156.
48
Cadmium-Ion (Cd
2+
)
9.97
157.
89
Hydroxo-Actinium-Ion (Ac(OH)
2+
)
9.9
158.
6
Alanin (CH
3
(NH
3
)CHCOO)
9.87
159.
28
Nickel(II)-Ion (Ni
2+
)
9.86
160.
16
Hydrogenperoxosulfat-Ion (HSO
5
-
)
9.86
161.
7
Trimethylammonium-Ion ((CH
3
)
3
NH
+
)
9.81
162.
57
Dihydroxo-Lanthan-Ion (La(OH)
2
+
)
9.80
163.
15
Hydrogenimidodiphosphat-Ion (HP
2
O
6
NH
3-
)
9.72
164.
94
Plutonyl(V)-Ion (PuO
2
+
)
9.7
165.
16
Hydrogendisulfid-Ion (HS
2
-
)
9.7
166.
7
Hydrogenperoxohyponitrit-Ion (HN
2
O(O
2
)
-
)
9.70
167.
49
Indium(III)hydroxid (In(OH)
3
)
9.67
168.
14
Orthokieselsäure (H
4
SiO
4
)
9.66
169.
27
Hydroxo-Kobalt(II)-Ion (Co(OH)
+
)
9.63
170.
82
Hydroxo-Blei(II)-Ion (Pb(OH)
+
)
9.62
171.
39
Dihydroxo-Yttrium-Ion (Y(OH)
2
+
)
9.60
172.
58
Dihydroxo-Cer(III)-Ion (Ce(OH)
2
+
)
9.60
173.
73
Metatantalsäure (HTaO
3
)
9.60
174.
21
Scandiumhydroxid (Sc(OH)
3
)
9.6
175.
57
Hydroxo-Lanthan-Ion (La(OH)
2+
)
9.60
176.
6
Glycin ((NH
3
)CH
2
COO)
9.60
177.
50
Zinn(II)hydroxid (Sn(OH)
2
)
9.55
178.
14
Metakieselsäure (H
2
SiO
3
)
9.51
179.
60
Dihydroxo-Neodym(III)-Ion (Nd(OH)
2
+
)
9.50
180.
26
Eisen(II)-Ion (Fe
2+
)
9.50
181.
8
Trioxidan (H
2
O
3
)
9.5
182.
27
Kobalt(II)-Ion (Co
2+
)
9.47
183.
64
Gadoliniumhydroxid (Gd(OH)
3
)
9.40
184.
62
Dihydroxo-Samarium(III)-Ion (Sm(OH)
2
+
)
9.40
185.
59
Dihydroxo-Praseodym(III)-Ion (Pr(OH)
2
+
)
9.40
186.
61
Dihydroxo-Promethium(III)-Ion (Pm(OH)
2
+
)
9.40
187.
89
Actinium-Ion (Ac
3+
)
9.4
188.
33
Metaarsenige Säure (HAsO
2
)
9.28
189.
15
Hydrogendiphosphat-Ion (HP
2
O
7
3-
)
9.25
190.
58
Hydroxo-Cer(III)-Ion (Ce(OH)
2+
)
9.25
191.
5
Orthoborsäure (B(OH)
3
)
9.25
192.
7
Ammonium-Ion (NH
4
+
)
9.21
193.
6
Blausäure (HCN)
9.21
194.
33
Arsenige Säure (H
3
AsO
3
)
9.21
195.
78
Hydroxo-Platin(II)-Ion (Pt(OH)
+
)
9.20
196.
5
Metaborsäure (HBO
2
)
9.12
197.
24
Chrom(III)hydroxid (Cr(OH)
3
)
9.1
198.
63
Europium(III)hydroxid (Eu(OH)
3
)
9.10
199.
33
Hydrogenpropylarsonat-Ion (HAsO
3
(C
3
H
7
)
-
)
9.09
200.
5
Hydrogentetraborat-Ion (HB
4
O
7
-
)
9
201.
59
Hydroxo-Praseodym(III)-Ion (Pr(OH)
2+
)
9.00
202.
30
Hydroxo-Zink-Ion (Zn(OH)
+
)
8.99
203.
30
Zink-Ion (Zn
2+
)
8.96
204.
33
Hydrogenbutylarsonat-Ion (HAsO
3
(C
4
H
9
)
-
)
8.91
205.
67
Holmium(III)hydroxid (Ho(OH)
3
)
8.90
206.
106
Hydrogenseaborgiat(VI)-Ion (HSgO
4
-
)
8.9
207.
15
Hydrogenbutylphosphonat-Ion (HPO
3
(C
4
H
9
)
-
)
8.88
208.
65
Dihydroxo-Terbium(III)-Ion (Tb(OH)
2
+
)
8.80
209.
66
Dysprosium(III)hydroxid (Dy(OH)
3
)
8.80
210.
63
Dihydroxo-Europium(III)-Ion (Eu(OH)
2
+
)
8.80
211.
60
Hydroxo-Neodym(III)-Ion (Nd(OH)
2+
)
8.80
212.
61
Hydroxo-Promethium(III)-Ion (Pm(OH)
2+
)
8.80
213.
70
Ytterbium(III)hydroxid (Yb(OH)
3
)
8.70
214.
71
Lutetiumhydroxid (Lu(OH)
3
)
8.7
215.
39
Hydroxo-Yttrium-Ion (Y(OH)
2+
)
8.70
216.
32
Orthogermaniumsäure (H
4
GeO
4
)
8.68
217.
35
Hypobromige Säure (HOBr)
8.68
218.
15
Trimethylphosphonium-Ion ((CH
3
)
3
PH
+
)
8.65
219.
62
Hydroxo-Samarium(III)-Ion (Sm(OH)
2+
)
8.60
220.
4
Hydroxo-Beryllium-Ion (Be(OH)
+
)
8.60
221.
57
Lanthan-Ion (La
3+
)
8.60
222.
17
Perchlorylamid (ClO
3
(NH)
-
)
8.6
223.
63
Hydroxo-Europium(III)-Ion (Eu(OH)
2+
)
8.60
224.
32
Metagermaniumsäure (H
2
GeO
3
)
8.59
225.
15
Hydrogentriphosphat-Ion (HP
3
O
9
4-
)
8.51
226.
29
Hydroxo-Kupfer(II)-Ion (Cu(OH)
+
)
8.5
227.
66
Dihydroxo-Dysprosium(III)-Ion (Dy(OH)
2
+
)
8.50
228.
65
Hydroxo-Terbium(III)-Ion (Tb(OH)
2+
)
8.40
229.
68
Erbium(III)hydroxid (Er(OH)
3
)
8.40
230.
67
Dihydroxo-Holmium(III)-Ion (Ho(OH)
2
+
)
8.40
231.
58
Cer(III)-Ion (Ce
3+
)
8.35
232.
33
Hydrogenethylarsonat-Ion (HAsO
3
(C
2
H
5
)
-
)
8.35
233.
15
Hydrogentetraphosphat-Ion (HP
4
O
11
5-
)
8.34
234.
34
Hydrogenselenid-Ion (HSeO
3
-
)
8.32
235.
53
Tetrahydrogenorthoperiodat-Ion (H
4
IO
6
-
)
8.31
236.
69
Dihydroxo-Thulium(III)-Ion (Tm(OH)
2
+
)
8.30
237.
68
Dihydroxo-Erbium(III)-Ion (Er(OH)
2
+
)
8.30
238.
70
Dihydroxo-Ytterbium(III)-Ion (Yb(OH)
2
+
)
8.30
239.
64
Dihydroxo-Gadolinium-Ion (Gd(OH)
2
+
)
8.30
240.
47
Silber(II)ion (Ag
2+
)
8.24
241.
66
Hydroxo-Dysprosium(III)-Ion (Dy(OH)
2+
)
8.24
242.
7
Hydroxylammonium-Ion (NH
3
OH
+
)
8.20
243.
6
Peroxoessigsäure (CH
3
C(O
2
)OH)
8.20
244.
8
Wasserstoffozonid (HO
3
)
8.2
245.
64
Hydroxo-Gadolinium-Ion (Gd(OH)
2+
)
8.20
246.
59
Praseodym(III)-Ion (Pr
3+
)
8.20
247.
67
Hydroxo-Holmium(III)-Ion (Ho(OH)
2+
)
8.20
248.
6
Peroxobuttersäure (C
3
H
7
C(O
2
)OH)
8.20
249.
71
Dihydroxo-Lutetium-Ion (Lu(OH)
2
+
)
8.20
250.
6
Hydrogentrithiocarbonat-Ion (HCS
3
-
)
8.18
251.
33
Hydrogenmethylarsonat-Ion (HAsO
3
(CH
3
)
-
)
8.18
252.
15
Hydrogenpropylphosphonat-Ion (HPO
3
(C
3
H
7
)
-
)
8.18
253.
69
Hydroxo-Thulium(III)-Ion (Tm(OH)
2+
)
8.15
254.
71
Hydroxo-Lutetium-Ion (Lu(OH)
2+
)
8.10
255.
15
Hydrogenamidophosphonat-Ion (HPO
3
(NH
2
)
-
)
8.10
256.
6
Peroxopropionsäure (C
2
H
5
C(O
2
)OH)
8.10
257.
60
Neodym(III)-Ion (Nd
3+
)
8.10
258.
74
Hydrogenwolframat-Ion (HWO
4
-
)
8.10
259.
70
Hydroxo-Ytterbium(III)-Ion (Yb(OH)
2+
)
8.05
260.
15
Hydrogenethylphosphonat-Ion (HPO
3
(C
2
H
5
)
-
)
8.05
261.
68
Hydroxo-Erbium(III)-Ion (Er(OH)
2+
)
8.03
262.
52
Hydrogentellurid-Ion (HTeO
3
-
)
8
263.
64
Gadolinium-Ion (Gd
3+
)
8.00
264.
61
Promethium(III)-Ion (Pm
3+
)
8.00
265.
7
Ethylhydrazidium-Ion (C
2
H
5
N
2
H
4
+
)
7.99
266.
50
Zinn(IV)hydroxid (Sn(OH)
4
)
7.97
267.
66
Dysprosium(III)-Ion (Dy
3+
)
7.96
268.
7
Hydrazinium-Ion (N
2
H
5
+
)
7.93
269.
23
Dihydrogenorthovanadat(V)-Ion (H
2
VO
4
-
)
7.92
270.
95
Hydroxo-Americium(III)-Ion (Am(OH)
2+
)
7.90
271.
67
Holmium(III)-Ion (Ho
3+
)
7.90
272.
96
Hydroxo-Curium(III)-Ion (Cm(OH)
2+
)
7.90
273.
62
Samarium(III)-Ion (Sm
3+
)
7.90
274.
65
Terbium(III)-Ion (Tb
3+
)
7.90
275.
94
Hydroxo-Plutonium(III)-Ion (Pu(OH)
2+
)
7.88
276.
68
Erbium(III)-Ion (Er
3+
)
7.87
277.
7
Methylhydrazidium-Ion (CH
3
N
2
H
4
+
)
7.87
278.
63
Europium(III)-Ion (Eu
3+
)
7.80
279.
69
Thulium(III)-Ion (Tm
3+
)
7.75
280.
15
Hydrogenmethylphosphonat-Ion (HPO
3
(CH
3
)
-
)
7.74
281.
52
Orthotellursäure (H
6
TeO
6
)
7.7
282.
6
Hydrogentriselenocarbonat-Ion (HCSe
3
-
)
7.70
283.
39
Yttrium-Ion (Y
3+
)
7.70
284.
15
Hydrogenperoxodiphosphat (HP
2
O
8
3-
)
7.67
285.
70
Ytterbium(III)-Ion (Yb
3+
)
7.65
286.
71
Lutetium-Ion (Lu
3+
)
7.60
287.
17
Hypochlorige Säure (HOCl)
7.54
288.
92
Uran(IV)hydroxid (U(OH)
4
)
7.5
289.
42
Hydrogenmolybdat-Ion (HMoO
4
-
)
7.50
290.
16
Hydrogentrisulfid-Ion (HS
3
-
)
7.5
291.
82
Blei(II)-Ion (Pb
2+
)
7.49
292.
93
Neptunium(III)-Ion (Np
3+
)
7.43
293.
29
Kupfer(II)-Ion (Cu
2+
)
7.42
294.
41
Metaniobsäure (HNbO
3
)
7.40
295.
15
Dihydrogenhypodiphosphat-Ion (H
2
P
2
O
6
2-
)
7.27
296.
26
Hydrogenferrat(VI)-Ion (HFeO
4
-
)
7.23
297.
94
Plutonium(III)-Ion (Pu
3+
)
7.22
298.
15
Dihydrogenphosphat-Ion (H
2
PO
4
-
)
7.21
299.
16
Hydrogensulfit-Ion (HSO
3
-
)
7.21
300.
7
Hyposalpetrige Säure ((HNO)
2
)
7.21
301.
76
Perosmiumsäure (H
4
OsO
6
)
7.2
302.
92
Uranyl(VI)hydroxid (UO
2
(OH)
2
)
7.2
303.
33
Dihydrogenthioarsenat-Ion (H
2
AsSO
3
-
)
7.2
304.
33
Dihydrogendithioarsenat-Ion (H
2
AsS
2
O
2
-
)
7.1
305.
25
Pentacarbonylmangan(-I)säure (HMn(CO)
5
)
7.1
306.
6
Peroxoameisensäure (HC(O
2
)OH)
7.10
307.
15
Dihydrogenimidodiphosphat-Ion (H
2
P
2
O
6
NH
2-
)
7.08
308.
15
Hydrogenphenylphosphonat-Ion (HPO
3
(C
6
H
5
)
-
)
7.07
309.
16
Schwefelwasserstoff (H
2
S)
7.06
310.
22
Titanyl(IV)dihydroxid (TiO(OH)
2
)
7.0
311.
6
Hydrogenmellitat-Ion (C
6
(COOH)(COO)
5
5-
)
6.96
312.
26
Dihydroxo-Eisen(III)-Ion (Fe(OH)
2
+
)
6.89
313.
23
Vanadium(II)-Ion (V
2+
)
6.85
314.
7
Peroxosalpetrige Säure (HNO(O
2
))
6.8
315.
92
Hydroxo-Uranyl(VI)-Ion (UO
2
(OH)
+
)
6.8
316.
33
Dihydrogenarsenat-Ion (H
2
AsO
4
-
)
6.77
317.
94
Trihydroxo-Plutonium(IV)-Ion (Pu(OH)
3
+
)
6.70
318.
15
Dihydrogentetraphosphat-Ion (H
2
P
4
O
11
4-
)
6.63
319.
15
Dihydrogendiphosphat-Ion (H
2
P
2
O
7
2-
)
6.60
320.
7
Nitramin (NO
2
NH
2
)
6.60
321.
15
Hydrogentetrathiophosphat-Ion (HPS
4
2-
)
6.6
322.
15
Hydrogenphosphit-Ion (H
2
PO
3
-
)
6.59
323.
16
Thiophenol (C
6
H
5
SH)
6.52
324.
6
Kohlensäure (H
2
CO
3
)
6.46
325.
24
Hydrogenchromat-Ion (HCrO
4
-
)
6.45
326.
21
Dihydroxo-Scandium-Ion (Sc(OH)
2
+
)
6.4
327.
6
Hydrogencitrat-Ion (C
6
H
6
O
7
2-
)
6.4
328.
83
Dihydroxo-Wismut(III)-Ion (Bi(OH)
2
+
)
6.38
329.
23
Hydroxovanadyl(IV)-Ion (VO(OH)
+
)
6.34
330.
15
Hydrogenselenophosphat-Ion (HPSeO
3
2-
)
6.30
331.
31
Galliumhydroxid (Ga(OH)
3
)
6.3
332.
40
Zirconium(IV)hydroxid (Zr(OH)
4
)
6.30
333.
16
Hydrogentetrasulfid-Ion (HS
4
-
)
6.3
334.
54
Trihydrogenxenonat(VIII)-Ion (H
3
XeO
6
-
)
6
335.
96
Curium(III)-Ion (Cm
3+
)
5.92
336.
95
Americium(III)-Ion (Am
3+
)
5.92
337.
34
Selenophenol (C
6
H
5
SeH)
5.90
338.
6
Dihydrogenmellitat-Ion (C
6
(COOH)
2
(COO)
4
4-
)
5.89
339.
13
Dihydroxo-Aluminium-Ion (Al(OH)
2
+
)
5.86
340.
15
Dihydrogentriphosphat-Ion (H
2
P
3
O
9
3-
)
5.83
341.
90
Trihydroxo-Thorium(IV)-Ion (Th(OH)
3
+
)
5.80
342.
4
Beryllium-Ion (Be
2+
)
5.75
343.
23
Vanadyl(IV)hydroxid (VO(OH)
2
)
5.70
344.
16
Hydrogenpentasulfid-Ion (HS
5
-
)
5.7
345.
24
Dihydroxo-Chrom(III)-Ion (Cr(OH)
2
+
)
5.7
346.
6
Hydrogenmalonat-Ion (CH
2
H(COO)
2
-
)
5.69
347.
23
Vanadyl(IV)-Ion (VO
2+
)
5.66
348.
92
Trihydroxo-Uran(IV)-Ion (U(OH)
3
+
)
5.65
349.
98
Californium(III)-Ion (Cf
3+
)
5.62
350.
6
Hydrogensuccinat-Ion ((CH
2
)
2
H(COO)
2
-
)
5.61
351.
6
Hydrogenazelat-Ion ((CH
2
)
7
H(COO)
2
-
)
5.60
352.
84
Dihydroxo-Polonium(IV)-Ion (Po(OH)
2
2+
)
5.58
353.
6
Hydrogenglutarat-Ion ((CH
2
)
3
H(COO)
2
-
)
5.57
354.
6
Hydrogenpimelat-Ion ((CH
2
)
5
H(COO)
2
-
)
5.52
355.
21
Hydroxo-Scandium-Ion (Sc(OH)
2+
)
5.5
356.
104
Rutherfordium(IV)hydroxid (Rf(OH)
4
)
5.5
357.
15
Dihydrogenperoxophosphat-Ion (H
2
PO
5
-
)
5.5
358.
6
Hydrogensebacat-Ion ((CH
2
)
8
H(COO)
2
-
)
5.45
359.
15
Dihydrogenthiophosphat-Ion (H
2
PSO
3
-
)
5.43
360.
13
Hydroxo-Aluminium-Ion (Al(OH)
2+
)
5.43
361.
6
Hydrogenadipat-Ion ((CH
2
)
4
H(COO)
2
-
)
5.42
362.
6
Hydrogensuberat-Ion ((CH
2
)
6
H(COO)
2
-
)
5.40
363.
104
Trihydroxo-Rutherfordium(IV)-Ion (Rf(OH)
3
+
)
5.3
364.
6
Hypothiocyanitige Säure (HOSCN)
5.30
365.
93
Trihydroxo-Neptunium(IV)-Ion (Np(OH)
3
+
)
5.30
366.
7
Phenylhydrazidium-Ion (C
6
H
5
N
2
H
4
+
)
5.21
367.
77
Hydroxo-Iridium(III)-Ion (Ir(OH)
2+
)
5.20
368.
33
Hydrogentetrathioarsenat-Ion (HAsS
4
2-
)
5.20
369.
92
Uranyl(VI)-Ion (UO
2
2+
)
5.2
370.
16
Hydrogenhexasulfid-Ion (HS
6
-
)
5.2
371.
34
Methanselenol (CH
3
SeH)
5.20
372.
15
Dihydrogenperoxodiphosphat (H
2
P
2
O
8
2-
)
5.18
373.
49
Dihydroxo-Indium(III)-Ion (In(OH)
2
+
)
5.16
374.
99
Einsteinium(III)-Ion (Es
3+
)
5.14
375.
15
Hydrogenmonofluorophosphat-Ion (HPFO
3
-
)
5.12
376.
97
Berkelium(III)-Ion (Bk
3+
)
5.10
377.
93
Neptunyl(VI)-Ion (NpO
2
2+
)
5.10
378.
6
Hydrogenmalat-Ion (CH
2
CHOH-H(COO)
2
-
)
5.10
379.
25
Mangan(VI)säure (H
2
MnO
4
)
5
380.
16
Disulfan (H
2
S
2
)
5
381.
6
Hydrogentartronat-Ion ((CHOH)H(COO)
2
-
)
4.98
382.
6
Pelargonsäure (C
8
H
17
COOH)
4.95
383.
24
Perchrom(VI)säure (H
2
CrO
5
)
4.95
384.
21
Scandium-Ion (Sc
3+
)
4.93
385.
6
Caprinsäure (C
9
H
19
COOH)
4.90
386.
6
Caprylsäure (C
7
H
15
COOH)
4.89
387.
6
Önanthsäure (C
6
H
13
COOH)
4.89
388.
13
Aluminium-Ion (Al
3+
)
4.89
389.
6
Capronsäure (C
5
H
11
COOH)
4.88
390.
6
Propionsäure (C
2
H
5
COOH)
4.87
391.
6
Valeriansäure (C
4
H
9
COOH)
4.84
392.
15
Diamidophosphonsäure (HPO
2
(NH
2
)
2
)
4.83
393.
6
Buttersäure (C
3
H
7
COOH)
4.82
394.
80
Quecksilber(I)-Ion (Hg
2
2+
)
4.80
395.
6
Trihydrogenmellitat-Ion (C
6
(COOH)
3
(COO)
3
3-
)
4.78
396.
6
Dihydrogencitrat-Ion (C
6
H
7
O
7
-
)
4.76
397.
7
Stickstoffwasserstoffsäure (HN
3
)
4.76
398.
6
Essigsäure (CH
3
COOH)
4.76
399.
31
Dihydroxo-Gallium-Ion (Ga(OH)
2
+
)
4.75
400.
78
Platin(II)-Ion (Pt
2+
)
4.73
401.
6
Sebacinsäure ((CH
2
)
8
(COOH)
2
)
4.72
402.
8
Wasserstoffhyperoxid (HO
2
)
4.7
403.
6
Crotonsäure (C
3
H
5
COOH)
4.69
404.
7
Phenylammonium-Ion (C
6
H
5
NH
3
+
)
4.63
405.
26
Hydroxo-Eisen(III)-Ion (Fe(OH)
2+
)
4.59
406.
6
Azelainsäure ((CH
2
)
7
(COOH)
2
)
4.53
407.
6
Korksäure ((CH
2
)
6
(COOH)
2
)
4.51
408.
6
Pimelinsäure ((CH
2
)
5
(COOH)
2
)
4.47
409.
6
Adipinsäure ((CH
2
)
4
(COOH)
2
)
4.43
410.
24
Hydroxo-Chrom(III)-Ion (Cr(OH)
2+
)
4.4
411.
26
Tetracarbonyleisen(-II)säure (H
2
Fe(CO)
4
)
4.4
412.
90
Dihydroxo-Thorium(IV)-Ion (Th(OH)
2
2+
)
4.40
413.
77
Iridium(III)-Ion (Ir
3+
)
4.37
414.
6
Hydrogentartrat-Ion ((CHOH)
2
H(COO)
2
-
)
4.34
415.
6
Glutarsäure ((CH
2
)
3
(COOH)
2
)
4.33
416.
49
Hydroxo-Indium(III)-Ion (In(OH)
2+
)
4.28
417.
6
Acrylsäure (C
2
H
3
COOH)
4.23
418.
33
Butylarsonsäure (H
2
AsO
3
(C
4
H
9
))
4.23
419.
6
Benzoesäure (C
6
H
5
COOH)
4.21
420.
33
Propylarsonsäure (H
2
AsO
3
(C
3
H
7
))
4.21
421.
90
Hydroxo-Thorium(IV)-Ion (Th(OH)
3+
)
4.20
422.
16
Trisulfan (H
2
S
3
)
4.2
423.
6
Hydrogenoxalat-Ion (H(COOH)
2
-
)
4.19
424.
6
Bernsteinsäure ((CH
2
)
2
(COOH)
2
)
4.16
425.
23
Dihydroxo-Vanadium(III)-Ion (V(OH)
2
+
)
4.10
426.
84
Polonige Säure (H
2
PoO
3
)
4.09
427.
94
Hydroxo-Plutonyl(VI)-Ion (PuO
2
(OH)
+
)
4.05
428.
6
Peroxokohlensäure (H
2
CO(O
2
))
4
429.
5
Tetraborsäure (H
2
B
4
O
7
)
4
430.
24
Chrom(III)-Ion (Cr
3+
)
3.95
431.
6
Isocyansäure (HNCO)
3.92
432.
6
Milchsäure (C
2
H
4
(OH)COOH)
3.90
433.
90
Thorium(IV)-Ion (Th
4+
)
3.89
434.
33
Ethylarsonsäure (H
2
AsO
3
(C
2
H
5
))
3.89
435.
16
Hydrazidosulfonsäure (N
2
H
3
SO
3
H)
3.85
436.
6
Glycolsäure (CH
2
(OH)COOH)
3.83
437.
23
Metavanadium(V)säure (HVO
3
)
3.80
438.
16
Tetrasulfan (H
2
S
4
)
3.8
439.
74
Wolframsäure (H
2
WO
4
)
3.80
440.
79
Gold(I)-Ion (Au
+
)
3.8
441.
100
Fermium(III)-Ion (Fm
3+
)
3.79
442.
31
Hydroxo-Gallium-Ion (Ga(OH)
2+
)
3.77
443.
106
Seaborgium(VI)säure (H
2
SgO
4
)
3.75
444.
6
Ameisensäure (HCOOH)
3.75
445.
34
Selenwasserstoffsäure (H
2
Se)
3.73
446.
42
Molybdänsäure (H
2
MoO
4
)
3.70
447.
17
Perchlorylamin (ClO
3
(NH
2
))
3.7
448.
50
Hydroxozinn(II)-Ion (Sn(OH)
+
)
3.66
449.
104
Dihydroxo-Rutherfordium(IV)-Ion (Rf(OH)
2
2+
)
3.6
450.
49
Indium(III)-Ion (In
3+
)
3.54
451.
26
Eisen(VI)säure (H
2
FeO
4
)
3.50
452.
15
Dihydrogentetrathiophosphat-Ion (H
2
PS
4
-
)
3.5
453.
25
Mangan(III)-Ion (Mn
3+
)
3.5
454.
16
Pentasulfan (H
2
S
5
)
3.5
455.
15
Propylphosphinsäure (HPO
2
(C
3
H
7
))
3.46
456.
6
Cyansäure (HOCN)
3.46
457.
91
Hydroxo-Protactinyl(V)-Ion (PaO(OH)
2+
)
3.46
458.
6
Äpfelsäure (CH
2
CHOH(COOH)
2
)
3.46
459.
93
Dihydroxo-Neptunium(IV)-Ion (Np(OH)
2
2+
)
3.43
460.
23
Hydroxo-Vanadium(III)-Ion (V(OH)
2+
)
3.41
461.
33
Methylarsonsäure (H
2
AsO
3
(CH
3
))
3.41
462.
15
Butylphosphinsäure (HPO
2
(C
4
H
9
))
3.41
463.
80
Quecksilber(II)-Ion (Hg
2+
)
3.40
464.
50
Zinn(II)-Ion (Sn
2+
)
3.40
465.
44
Ruthenium(III)-Ion (Ru
3+
)
3.4
466.
92
Dihydroxo-Uran(IV)-Ion (U(OH)
2
2+
)
3.37
467.
7
Salpetrige Säure (HNO
2
)
3.35
468.
45
Rhodium(III)-Ion (Rh
3+
)
3.33
469.
94
Plutonyl(VI)-Ion (PuO
2
2+
)
3.33
470.
50
Trihydroxo-Zinn(IV)-Ion (Sn(OH)
3
+
)
3.32
471.
6
Tetrahydrogenmellitat-Ion (C
6
(COOH)
4
(COO)
2
2-
)
3.31
472.
33
Thioarsensäure (H
3
AsSO
3
)
3.3
473.
53
Ortho-Periodsäure (H
5
IO
6
)
3.29
474.
15
Ethylphosphinsäure (HPO
2
(C
2
H
5
))
3.29
475.
82
Hydroxo-Blei(IV)-Ion (Pb(OH)
3+
)
3.2
476.
16
Hexasulfan (H
2
S
6
)
3.2
477.
9
Flusssäure (HF)
3.14
478.
6
Citronensäure (C
6
H
8
O
7
)
3.13
479.
6
Iodessigsäure (CIH
2
COOH)
3.13
480.
94
Dihydroxo-Plutonium(IV)-Ion (Pu(OH)
2
2+
)
3.12
481.
15
Dihydrogenselenophosphat-Ion (H
2
PSeO
3
-
)
3.12
482.
15
Methylphosphinsäure (HPO
2
(CH
3
))
3.08
483.
6
Weinsäure ((CHOH)
2
(COOH)
2
)
2.98
484.
23
Vanadium(III)-Ion (V
3+
)
2.92
485.
31
Gallium-Ion (Ga
3+
)
2.92
486.
6
Bromessigsäure (CBrH
2
COOH)
2.87
487.
15
Trihydrogenimidodiphosphat-Ion (H
3
P
2
O
6
NH
-
)
2.85
488.
35
Bromige Säure (HBrO
2
)
2.85
489.
6
Chloressigsäure (CClH
2
COOH)
2.83
490.
26
Eisen(III)-Ion (Fe
3+
)
2.83
491.
6
Malonsäure (CH
2
(COOH)
2
)
2.83
492.
15
Trihydrogenhypodiphosphat-Ion (H
3
P
2
O
6
-
)
2.82
493.
15
Butylphosphonsäure (H
2
PO
3
(C
4
H
9
))
2.79
494.
6
Salicylsäure (C
6
H
4
(OH)COOH)
2.75
495.
15
Amidophosphonsäure (H
2
PO
3
(NH
2
))
2.74
496.
84
Hydroxo-Polonium(IV)-Ion (Po(OH)
3+
)
2.74
497.
15
Triphenylphosphonium-Ion ((C
6
H
5
)
3
PH
+
)
2.73
498.
15
Methylphosphonium-Ion (CH
3
PH
3
+
)
2.70
499.
52
Tellurige Säure (H
2
TeO
3
)
2.7
500.
6
Trithiokohlensäure (H
2
CS
3
)
2.68
501.
52
Tellurwasserstoffsäure (H
2
Te)
2.64
502.
34
Selenige Säure (H
2
SeO
3
)
2.62
503.
23
Orthovanadiumsäure (H
3
VO
4
)
2.6
504.
6
Fluoressigsäure (CFH
2
COOH)
2.57
505.
51
Orthoantimonsäure (H
7
SbO
6
)
2.55
506.
22
Titan(III)-Ion (Ti
3+
)
2.55
507.
7
Peroxohyposalpetrige Säure (H
2
N
2
O(O
2
))
2.51
508.
80
Hydroxo-Quecksilber(II)-Ion (Hg(OH)
+
)
2.50
509.
15
Propylphosphonsäure (H
2
PO
3
(C
3
H
7
))
2.49
510.
46
Hydroxo-Palladium(II)-Ion (Pd(OH)
+
)
2.46
511.
16
Hydrogendithionit-Ion (HS
2
O
4
-
)
2.45
512.
43
Hydroxytechnetyl(IV)-Ion (TcO(OH)
+
)
2.43
513.
15
Ethylphosphonsäure (H
2
PO
3
(C
2
H
5
))
2.43
514.
33
Dithioarsensäure (H
3
AsS
2
O
2
)
2.4
515.
22
Hydroxotitanyl(IV)-Ion (TiO(OH)
+
)
2.4
516.
15
Methylphosphonsäure (H
2
PO
3
(CH
3
))
2.38
517.
15
Trihydrogendiphosphat-Ion (H
3
P
2
O
7
-
)
2.36
518.
6
Alaninacidium-Ion (CH
3
(NH
3
)CHCOOH
+
)
2.35
519.
6
Glycinacidium-Ion ((NH
3
)CH
2
COOH
+
)
2.34
520.
6
Tartronsäure ((CHOH)(COOH)
2
)
2.30
521.
58
Trihydroxo-Cer(IV)-Ion (Ce(OH)
3
+
)
2.29
522.
16
Methylsulfinsäure ((CH
3
)SO
2
H)
2.28
523.
33
Arsensäure (H
3
AsO
4
)
2.25
524.
15
Trihydrogentetraphosphat-Ion (H
3
P
4
O
11
3-
)
2.23
525.
15
Hypophosphorige Säure (H
3
PO
2
)
2.23
526.
15
Hypodiphosphorsäure (H
4
P
2
O
6
)
2.22
527.
6
Pentahydrogenmellitat-Ion (C
6
(COOH)
5
COO
-
)
2.19
528.
22
Hexafluorotitan(IV)säure (H
2
TiF
6
)
2.14
529.
15
Phosphorsäure (H
3
PO
4
)
2.13
530.
104
Hydroxo-Rutherfordium(IV)-Ion (Rf(OH)
3+
)
2.1
531.
22
Titanyl(IV)-Ion (TiO
2+
)
2.1
532.
54
Xenon(VIII)säure (H
4
XeO
6
)
2
533.
15
Trihydrogentriphosphat-Ion (H
3
P
3
O
9
2-
)
2
534.
15
Imidodiphosphorsäure (H
4
P
2
O
6
NH)
2
535.
17
Chlorige Säure (HClO
2
)
1.97
536.
14
Hydrogenhexafluorosilicat-Ion (HSiF
6
-
)
1.92
537.
15
Phosphorige Säure (H
3
PO
3
)
1.92
538.
16
Hydrogensulfat-Ion (HSO
4
-
)
1.92
539.
16
Schweflige Säure (H
2
SO
3
)
1.92
540.
81
Dihydroxo-Thallium(III)-Ion (Tl(OH)
2
+
)
1.90
541.
104
Rutherfordium(IV)-Ion (Rf
4+
)
1.9
542.
16
Phenylsulfinsäure ((C
6
H
5
)SO
2
H)
1.84
543.
23
Vanadyl(V)-Ion (VO
2
+
)
1.83
544.
15
Phenylphosphonsäure (H
2
PO
3
(C
6
H
5
))
1.83
545.
22
Hydroxo-Titan(IV)-Ion (Ti(OH)
3+
)
1.80
546.
82
Blei(IV)-Ion (Pb
4+
)
1.8
547.
15
Thiophosphorsäure (H
3
PSO
3
)
1.79
548.
27
Kobalt(III)-Ion (Co
3+
)
1.75
549.
34
Hydrogenselenat-Ion (HSeO
4
-
)
1.74
550.
15
Tetrahydrogentriphosphat-Ion (H
4
P
3
O
9
-
)
1.7
551.
58
Dihydroxo-Cer(IV)-Ion (Ce(OH)
2
2+
)
1.68
552.
46
Palladium(II)-Ion (Pd
2+
)
1.65
553.
83
Hydroxo-Wismut(III)-Ion (Bi(OH)
2+
)
1.64
554.
53
Metaperiodsäure (HIO
4
)
1.64
555.
16
Hydrogenthiosulfat-Ion (HS
2
O
3
-
)
1.6
556.
15
Diphosphorsäure (H
4
P
2
O
7
)
1.52
557.
15
Tetrathiophosphorsäure (H
3
PS
4
)
1.5
558.
85
Astat(I)-Ion (At
+
)
1.50
559.
6
Diiodessigsäure (CI
2
HCOOH)
1.49
560.
92
Hydroxo-Uran(IV)-Ion (U(OH)
3+
)
1.49
561.
51
Dihydroxo-Antimon(III)-Ion (Sb(OH)
2
+
)
1.42
562.
6
Mellitsäure (C
6
(COOH)
6
)
1.40
563.
6
Dibromessigsäure (CBr
2
HCOOH)
1.39
564.
43
Technetyl(IV)-Ion (TcO
2+
)
1.37
565.
15
Tetrahydrogentetraphosphat-Ion (H
4
P
4
O
11
2-
)
1.36
566.
15
Dimethylphosphonsäure (HPO
2
(CH
3
)
2
)
1.29
567.
6
Dichloressigsäure (CCl
2
HCOOH)
1.29
568.
91
Trihydroxo-Protactinium(IV)-Ion (Pa(OH)
3
+
)
1.25
569.
6
Difluoressigsäure (CF
2
HCOOH)
1.24
570.
6
Oxalsäure ((COOH)
2
)
1.23
571.
53
Hypoioditazidium-Ion (H
2
OI
+
)
1.2
572.
6
Triselenokohlensäure (H
2
CSe
3
)
1.16
573.
15
Peroxophosphorsäure (H
3
PO
5
)
1.1
574.
106
Trihydroxo-Seaborgyl(VI)-Ion (SgO(OH)
3
+
)
1.02
575.
15
Pentahydrogentetraphosphat-Ion (H
5
P
4
O
11
-
)
1
576.
27
Tetracarbonylcobalt(-I)säure (HCo(CO)
4
)
1
577.
15
Triphosphorsäure (H
5
P
3
O
9
)
1
578.
79
Dihydroxo-Gold(III)-Ion (Au(OH)
2
+
)
1.0
579.
34
Thioselensäure (H
2
SeSO
3
)
0.99
580.
16
Amidosulfonsäure (NH
2
SO
3
H)
0.99
581.
74
Trihydroxowolframyl(VI)-Ion (WO(OH)
3
+
)
0.98
582.
42
Trihydroxomolybdänyl(VI)-Ion (MoO(OH)
3
+
)
0.93
583.
50
Dihydroxo-Zinn(IV)-Ion (Sn(OH)
2
2+
)
0.92
584.
83
Wismut(III)-Ion (Bi
3+
)
0.92
585.
6
Triiodessigsäure (CI
3
COOH)
0.90
586.
58
Hydroxo-Cer(IV)-Ion (Ce(OH)
3+
)
0.82
587.
53
Iodäure (HIO
3
)
0.804
588.
81
Hydroxo-Thallium(III)-Ion (Tl(OH)
2+
)
0.80
589.
16
Peroxoschwefelsäure (H
2
SO
5
)
0.8
590.
93
Hydroxo-Neptunium(IV)-Ion (Np(OH)
3+
)
0.78
591.
7
Diphenylammonium-Ion ((C
6
H
5
)
2
NH
2
+
)
0.78
592.
6
Tribromessigsäure (CBr
3
COOH)
0.72
593.
91
Protactinyl(V)-Ion (PaO
3+
)
0.65
594.
6
Trichloressigsäure (CCl
3
COOH)
0.65
595.
16
Thioschwefelsäure (H
2
S
2
O
3
)
0.6
596.
81
Thallium(III)-Ion (Tl
3+
)
0.60
597.
72
Trihydroxo-Hafnium(IV)-Ion (Hf(OH)
3
+
)
0.52
598.
15
Monofluorophosphorsäure (H
2
PFO
3
)
0.50
599.
79
Hydroxo-Gold(III)-Ion (Au(OH)
2+
)
0.5
600.
15
Tetraphosphorsäure (H
6
P
4
O
11
)
0.5
601.
15
Trihydrogenperoxodiphosphat (H
3
P
2
O
8
-
)
0.5
602.
84
Polonium(VI)-Ion (Po
4+
)
0.48
603.
40
Trihydroxo-Zirconium(IV)-Ion (Zr(OH)
3
+
)
0.46
604.
94
Hydroxo-Plutonium(IV)-Ion (Pu(OH)
3+
)
0.44
605.
72
Dihydroxo-Hafnium(IV)-Ion (Hf(OH)
2
2+
)
0.42
606.
91
Dihydroxo-Protactinium(IV)-Ion (Pa(OH)
2
2+
)
0.38
607.
40
Dihydroxo-Zirconium(IV)-Ion (Zr(OH)
2
2+
)
0.35
608.
16
Dithionige Säure (H
2
S
2
O
4
)
0.35
609.
43
Pertechnetiumsäure (HTcO
4
)
0.3
610.
92
Uran(IV)-Ion (U
4+
)
0.29
611.
72
Hydroxo-Hafnium(IV)-Ion (Hf(OH)
3+
)
0.23
612.
6
Trifluoressigsäure (CF
3
COOH)
0.23
613.
7
Harnstoff-Acidium-Ion (CO(NH
2
)(NH
3
)
+
)
0.18
614.
91
Hydroxo-Protactinium(IV)-Ion (Pa(OH)
3+
)
0.14
615.
93
Neptunium(IV)-Ion (Np
4+
)
0.09
616.
50
Hydroxo-Zinn(IV)-Ion (Sn(OH)
3+
)
0.08
617.
24
Hydrogendichromat-Ion (HCr
2
O
7
-
)
0.07
618.
40
Hydroxo-Zirconium(IV)-Ion (Zr(OH)
3+
)
0.06
619.
94
Plutonium(IV)-Ion (Pu
4+
)
0.05
620.
15
Selenophosphorsäure (H
3
PSeO
3
)
0.02
621.
51
Hydroxo-Antimon(III)-Ion (Sb(OH)
2+
)
0
622.
35
Bromsäure (HBrO
3
)
0
623.
42
Molybdän(III)-Ion (Mo
3+
)
-0.01
624.
72
Hafnium(IV)-Ion (Hf
4+
)
-0.12
625.
16
Hydrogendithionat-Ion (HS
2
O
6
-
)
-0.2
626.
40
Zirconium(IV)-Ion (Zr
4+
)
-0.32
627.
33
Dihydroxo-Arsen(III)-Ion (As(OH)
2
+
)
-0.34
628.
5
Tetrafluoroborsäure (HBF
4
)
-0.4
629.
50
Zinn(IV)-Ion (Sn
4+
)
-0.60
630.
24
Chromsäure (H
2
CrO
4
)
-0.61
631.
91
Protactinium(IV)-Ion (Pa
4+
)
-0.80
632.
53
Orthoperiodat-Acidium-Ion (H
6
IO
6
+
)
-0.80
633.
7
Dihydrazinium-Ion (N
2
H
6
2+
)
-0.88
634.
15
Amidophosphat-Azidium-Ion (H
2
PO
3
(NH
3
)
+
)
-0.9
635.
15
Phosphinazidium-Ion (H
4
PO
2
+
)
-1.05
636.
58
Cer(IV)-Ion (Ce
4+
)
-1.15
637.
75
Perrheniumsäure (HReO
4
)
-1.25
638.
6
Isothiocyansäure (HNCS)
-1.28
639.
7
Salpetersäure (HNO
3
)
-1.33
640.
16
Octansulfonsäure (C
8
H
19
SO
3
H)
-1.41
641.
16
1-Propansulfonsäure (CH
3
(CH
2
)
2
SO
3
H)
-1.49
642.
79
Gold(III)-Ion (Au
3+
)
-1.50
643.
15
Difluorophosphorsäure (HPF
2
O
2
)
-1.50
644.
51
Antimon(III)-Ion (Sb
3+
)
-1.67
645.
16
Ethansulfonsäure (C
2
H
5
SO
3
H)
-1.68
646.
16
Butansulfonsäure (C
4
H
9
SO
3
H)
-1.68
647.
8
Hydronium-Ion (H
3
O
+
)
-1.76
648.
16
2-Propansulfonsäure (CH
3
(CHSO
3
H)CH
3
)
-1.79
649.
6
Thiocyansäure (HSCN)
-1.85
650.
16
Methansulfonsäure (CH
3
SO
3
H)
-1.92
651.
35
Hypobromitazidium-Ion (H
2
OBr
+
)
-2
652.
15
Phosphonazidium-Ion (H
4
PO
3
+
)
-2.02
653.
8
Methyloxonium-Ion (CH
3
OH
2
+
)
-2.2
654.
25
Permangansäure (HMnO
4
)
-2.25
655.
8
Ethyloxonium-Ion (C
2
H
5
OH
2
+
)
-2.4
656.
16
Benzolsulfonsäure (C
6
H
5
SO
3
H)
-2.5
657.
8
Propyloxonium-Ion (C
3
H
7
OH
2
+
)
-2.6
658.
17
Chlorsäure (HClO
3
)
-2.7
659.
16
p-Toluolsulfonsäure (C
6
H
4
CH
3
SO
3
H)
-2.8
660.
16
Hydrogenperoxodisulfat-Ion (HS
2
O
8
-
)
-2.8
661.
16
Schwefelsäure (H
2
SO
4
)
-3
662.
34
Selensäure (H
2
SeO
4
)
-3
663.
14
Hexaflurokieselsäure (H
2
SiF
6
)
-3
664.
15
Peroxodiphosphorsäure (H
4
P
2
O
8
)
-3
665.
8
Isopropyloxonium (CH
3
(CHOH
2
)CH
3
+
)
-3.2
666.
16
Dithionsäure (H
2
S
2
O
6
)
-3.4
667.
17
Hypochloritazidium-Ion (H
2
OCl
+
)
-3.5
668.
16
Peroxodischwefelsäure (H
2
S
2
O
8
)
-3.5
669.
8
Diethyloxonium-Ion ((C
2
H
5
)
2
OH
+
)
-3.5
670.
8
Dimethyloxonium-Ion ((CH
3
)
2
OH
+
)
-3.8
671.
8
t-Butyloxoniumion ((CH
3
)
3
COH
2
+
)
-3.8
672.
22
Titan(IV)-Ion (Ti
4+
)
-4
673.
24
Dichromsäure (H
2
Cr
2
O
7
)
-4.5
674.
6
Benzoat-Acidium-Ion (C
6
H
5
C(OH)
2
+
)
-4.7
675.
15
Phosphatazidium-Ion (H
4
PO
4
+
)
-5
676.
7
Peroxosalpetersäure (HNO
2
(O
2
))
-5
677.
7
Triphenylammonium-Ion ((C
6
H
5
)
3
NH
+
)
-5
678.
16
Heptafluoropropansulfonsäure (C
3
F
7
SO
3
H)
-5.00
679.
16
Pentafluoroethansulfonsäure (C
2
F
5
SO
3
H)
-5.10
680.
16
Trifluoromethansulfonsäure (CF
3
SO
3
H)
-5.21
681.
17
Salzsäure (HCl)
-6
682.
6
Acetat-Acidium-Ion (CH
3
C(OH)
2
+
)
-6
683.
9
Fluoronium-Ion (H
2
F
+
)
-6
684.
6
Benzaldehyd-Acidium-Ion (C
6
H
5
CHOH
+
)
-6.2
685.
8
Phenyloxonium-Ion (C
6
H
5
OH
2
+
)
-6.7
686.
16
Methylsulfonium-Ion (CH
3
SH
2
+
)
-6.8
687.
7
Nitritazidium-Ion (H
2
NO
2
+
)
-7
688.
8
Hydroperoxonium-Ion (H
3
O
2
+
)
-7.7
689.
16
Hydrogendisulfat-Ion (HS
2
O
7
-
)
-8
690.
6
Ethanal-Acidium-Ion (CH
3
CHOH
+
)
-8
691.
35
Perbromsäure (HBrO
4
)
-8
692.
16
Sulfatazidium-Ion (H
3
SO
4
+
)
-8.3
693.
35
Bromwasserstoffsäure (HBr)
-8.72
694.
53
Iodwasserstoffsäure (HI)
-9.5
695.
17
Perchlorsäure (HClO
4
)
-10
696.
15
Hexafluorophosphorsäure (HPF
6
)
-10
697.
16
Chlorosulfonsäure (ClSO
3
H)
-10.43
698.
16
Dischwefelsäure (H
2
S
2
O
7
)
-12
699.
33
Hexafluoroarsensäure (HAsF
6
)
-13
700.
15
Phosponium-Ion (PH
4
+
)
-14
701.
16
Fluorosulfonsäure (FSO
3
H)
-14
702.
51
Hexafluoroantimonsäure (HSbF
6
)
-17