1. Write the solubility equilibrium and the solubility product expression for the following sparingly soluble salts....

1. Write the solubility equilibrium and the solubility product expression for the following sparingly soluble salts.

CaCO3

Cu2S

Sb2S3

2. The solubility of silver bromide, AgBr, at 25

Solutions

Expert Solution

a) CaCO3 Ca⁺² + CO3^-2

S S S

Ksp = [ Ca⁺²][CO3^-2]

Ksp = S²

b) Cu₂S 2Cu⁺ + S^-2

S 2 S S

Ksp = [ Cu⁺]²[S^-2]

Ksp = (2S)²(S) = 4S³

c) Sb2S3 2Sb⁺³ + 3S^-2

S 2S 3S

Ksp = [Sb⁺³]²[S^-2 ]³

= [2S]²[3S ]³

= 108S⁵

2) for AgBr

Ksp = S²

Ksp = (8.8.x.10^-7)²

= 77.44 x 10^-14

queen_honey_blossom answered 1 week ago

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