Question

Write the chemical equations for the dissociation of each of the following substances and determine their molar solubilities. (Use the lowest possible coefficients. Include states-of-matter under the given conditions in your answer. See the appendix.)

(a) BaSO₄

BaSO₄(s) ? Ba²⁺(aq)+SO

2-

4

(aq)

Correct.

M

(b) Ba(OH)₂

Ba(OH)₂(s) ? Ba²⁺(aq)+2OH^-(aq)

Correct.

M

Substance	Ksp at 25 oC
Aluminum
Al(OH)3	1.9 x 10-33
Barium
Ba(OH)2	5.0 x 10-3
BaCO3	8.1 x 10-9
BaSO4	1.1 x 10-10
Ba3(PO4)2	3.4 x 10-23
Cadmium
Cd(OH)2	2.5 x 10-14
CdCO3	5.2 x 10-12
CdS	8.0 x 10-27
Calcium
Ca(OH)2	5.5 x 10-6
CaCO3	4.8 x 10-9
Ca3(PO4)2	1.0 x 10-26
CaF2	3.9 x 10-11
Chromium
Cr(OH)3	6.3 x 10-31
Cobalt
Co(OH)2	1.6 x 10-15
CoS	4.0 x 10-21
Copper
Cu(OH)2	2.2 x 10-20
Cu2S	1.6 x 10-48
CuCO3	1.4 x 10-10
CuS	6.3 x 10-36
Iron
Fe(OH)2	8.0 x 10-16
FeS	6.3 x 10-18
Fe(OH)3	2.5 x 10-39
FePO4	9.9 x 10-29
Lead
Pb(OH)2	2.8 x 10-16
PbF2	3.7 x 10-8
PbCl2	1.7 x 10-5
PbBr2	6.3 x 10-6
PbI2	6.5 x 10-9
PbCrO4	1.8 x 10-14
PbSO4	1.7 x 10-8
PbS	8.4 x 10-28
Magnesium
Mg(OH)2	1.8 x 10-11
Manganese
Mn(OH)2	1.9 x 10-13
MnCO3	8.8 x 10-11
MnS	5.6 x 10-16
Nickel
Ni(OH)2	1.6 x 10-14
Silver
AgCl	1.8 x 10-10
AgBr	5.0 x 10-13
AgI	8.3 x 10-17
AgCN	1.2 x 10-16
Ag2S	6.3 x 10-50
Ag2CrO4	1.1 x 10-12
Ag3PO4	2.6 x 10-18
Tin
Sn(OH)2	1.4 x 10-28
SnS	1.3 x 10-23
Zinc
ZnCO3	1.0 x 10-10
Zn(OH)2	4.5 x 10-17
ZnS	1.1 x 10-21