Problem: Which of the following is the correct solubility-product constant expression for the following reaction?Ag2Se (s) ⇌ 2 Ag+ (aq) + Se2- (aq)A. Ksp = [Ag+][Se2-]/[Ag2Se]B. Ksp = [Ag+]2[Se2-]/[Ag2Se]C. Ksp = [Ag+]2[Se2-]D. Ksp = [Ag+][Se2-]E. Ksp = [Ag2Se]/[Ag+]2[Se2-]

FREE Expert Solution

We’re being asked to determine the equilibrium expression for the reaction:

Ag2Se (s) ⇌ 2 Ag+ (aq) + Se2- (aq)


Recall that the equilibrium constant is the ratio of the products and reactantsWe use Kp when dealing with pressure and Kc when dealing with concentration:


Kp=PproductsPreactants     Kc=[products][reactants]


Note that solid and liquid compounds are ignored in the equilibrium expression.


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Problem Details

Which of the following is the correct solubility-product constant expression for the following reaction?

Ag2Se (s) ⇌ 2 Ag+ (aq) + Se2- (aq)

A. Ksp = [Ag+][Se2-]/[Ag2Se]

B. Ksp = [Ag+]2[Se2-]/[Ag2Se]

C. Ksp = [Ag+]2[Se2-]

D. Ksp = [Ag+][Se2-]

E. Ksp = [Ag2Se]/[Ag+]2[Se2-]

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