Perform calculations using Ksp Question For the following equilibrium, if Kg = 7.6 x 10-30, what...

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science chemistry

Answer 1

Answer #1

Cu3(AsO4)2(s) <------> 3Cu²⁺(aq) + 2AsO4^2-(aq)

Ksp = [Cu²⁺]³[AsO4^2-]² = 7.6 ×10^-36

If solubility of Cu3(AsO4)2 is S

[Cu²⁺] = 3S

[AsO4^2-] = 2S

(3S)³(2S)² = 7.6 ×10^-36

108S⁵ =7.6 ×10^-36

S⁵ = 7.24× 10^-38

S = 3.73 ×10^-8

Therefore,

Molar solubility of Cu3(AsO4)2 = 3.73 ×10^-8 M

Answer 2

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