Stability Constants of Aqueous Complex Ions

James Richard Fromm


Ion Constant log Kstab Ion Constant log Kstab
Ag(CN)2- 2.47 x 10+20 20.394 Fe(CN)6---- 4.21 x 10+45 45.624
Ag(NH3)2+ 1.67 x 10+7 7.223 Fe(SCN)++ 9.17 x 10+2 2.963
AgCl2- 1.38 x 10+5 5.140 HgCl4-- 1.31 x 10+15 15.117
Al(OH)4- 3.30 x 10+33 33.518 Hg(CN)4-- 1.81 x 10+41 41.258
Ca(EDTA)2- 1.0  x 10+11 11.0 Hg(SCN)4-- 4.97 x 10+21 21.696
Cd(CN)4-- 1.94 x 10+18 18.288 HgI4-- 5.64 x 10+29 29.752
Cd(NH3)4++ 2.78 x 10+7 7.444 Mg(EDTA)-- 1.3  x 10+9 9.114
Co(NH3)6+++ 1.34 x 10+23 23.126 Ni(NH3)6++ 8.96 x 10+8 8.953
Cu(CN)3-- 4.20 x 10+28 28.623 Pb(OH)3- 8.26 x 10+13 13.917
Cu(CN)4--- 1.05 x 10+33 33.022 Zn(CN)4-- 5.70 x 10+16 16.756
Cu(NH3)4++ 2.30 x 10+12 12.362 Zn(NH3)4++ 3.60 x 10+8 8.557
Fe(CN)6--- 4.08 x 10+52 52.611 Zn(OH)4-- 3.97 x 10+15 15.599

Main Tables

Auxiliary Table


Copyright 1997 James R. Fromm