WATER CHEMISTRY 1263
TABLE 3
Equilibrium constants for oxides, hydroxides, carbonates, hydroxide carnonates, sulfates, silicates, and acidsReactionSymbol for
equilibrium
constants log K (25C) II. OXIDES AND HYDROXIDES
H 2 O(1) H OH Kw 14.00 0
13.77 1M NaClO 4
(am)Fe(OH) 3 (s) Fe^3 3OH Ks0 38.7 3M NaClO 4
(am)Fe(OH) 3 (s) FeOH^2 2OH Ks1 27.5 3M NaClO 4
(am)Fe(OH) 3 (s) Fe(OH) 2 OH Ks2 16.6 3M NaClO 4
(am)Fe(OH) 3 (s) OH FE(OH) 4 Ks4 4.5 3M NaClO 4
2(am)Fe(OH) 3 (s) Fe 2 (OH) 24 4OH Ks22 51.9 3M NaClO 4
(am)Fe(OOH)(s) 3H Fe^3 2H 2 O *Ks0 3.55 3M NaClO 4
a—FeOOH(s) 3H Fe^3 2H 2 O *Ks0 1.6 3M NaClO 4
a—Al(OH) 3 (gibbsite) 3H Al^3 3H 2 *Ks0 8.2 0
g—Al(OH) 3 (bayerite) 3H Al^3 3H 2 O *Ks0 9.0 0
(am)Al(OH) 3 (s) 3H Al^3 3H 2 O *Ks0 10.8 0
Al^3 4OH Al(OH) 4 K 4 32.5 0
CuO(s) 2H Cu^2 H 2 O *Ks0 7.65 0
Cu^2 OH CuOH K 1 6.0 (18C) 0
2Cu^2 2OH Cu 2 (OH) 22 K 22 17.0 (18C) 0
Cu^2 3OH Cu(OH) 3 K 3 15.2 0
Cu^2 4OH Cu(OH) 42 K 4 16.1 0
ZnO(s) 2H Zn^2 H 2 O *Ks0 11.18 0
Zn^2 OH ZnOH K 1 5.04 0
Zn^2 3OH Zn(OH) 3 K 3 13.9 0
Zn^2 4OH Zn(OH) 42 K 4 15.1 0
Cd(OH) 2 (s) 2H^2 Cd^2 2H 2 O *Ks0 13.61 0
Cd^2 OH CdOH K 1 3.8 1M LiClO 4
Mn(OH) 2 (s) Mn^2 2OH Ks0 12.8 0
Mn(OH) 2 (s) OH Mn(OH) 3 Ks3 5.0 0
Fe(OH) 2 (active) Fe^2 2OH Ks0 14.0 0
Fe(OH) 2 (inactive) Fe^2 2OH Ks0 14.5 (15.1) 0
Fe(OH) 2 (inactive) OH Fe(OH) 3 Ks3 5.5 0
Mg(OH) 2 Mg^2 2OH Ks0 9.2 0
Mg(OH) 2 (brucite) Mg^2 2OH Ks0 11.6 0
Mg^2 OH MgOH K 1 2.6 0
Ca(OH) 2 (s) Ca^2 2OH Ks0 5.43 0
Ca(OH) 2 (s) CaOH OH Ks1 4.03 0
Sr(OH) 2 (s) Sr^2 2OH Ks0 3.51 0
Sr(OH) 2 (s) SrOH OH Ks1 0.82 0
AgOH(s) Ag OH Ks0 7.5 0
II. CARBONATES AND HYDROXIDE CARBNONATES
CO 2 (g) H 2 O H HCO 3 Kp1 7.82 0
7.5 Seawater
5 C, 200 atm
seawater
HCO 3 H CO 32 (K 2 ) 10.33 0
9.0 Seawater(Continued)C023_002_r03.indd 1263C023_002_r03.indd 1263 11/18/2005 1:32:08 PM11/18/2005 1:32:08 PM