SATHEE: Equilibrium Question 147

Equilibrium Question 147

Question: The expression for the solubility product of $A l_{2}, {(S O_{4})}_{3}$ is

Options:

A) $K_{s p} = [A l^{3 +}] (S O_{4}^{2 -}]$

B) $K_{s p} = {[A l^{3 +}]}^{2} {(S O_{4}^{2 -}]}^{3}$

C) $K_{s p} = {[A l^{3 +}]}^{3} {(S O_{4}^{2 -}]}^{2}$

D) $K_{s p} = {[A l^{3 +}]}^{2} {(S O_{4}^{2 -}]}^{2}$

Show Answer

Answer:

Correct Answer: B

Solution:

Solubility of $A l_{2} {(S O_{4})}_{3}$

$A l_{2} {(S O_{4})}_{3}$ ⇌ $2 A l^{+ + +} + 3 S O_{4}^{-, -}$

$K_{s p} = {[A l^{3 +}]}^{2}, {[S O_{4}^{2 -}]}^{3}$

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