Equilibrium Question 147

Question: The expression for the solubility product of $ Al_2,{{(SO_4)}_3} $ is

Options:

A) $ K _{sp}=[A{l^{3+}}](SO_4^{2-}] $

B) $ K _{sp}={{[A{l^{3+}}]}^{2}}{{(SO_4^{2-}]}^{3}} $

C) $ K _{sp}={{[A{l^{3+}}]}^{3}}{{(SO_4^{2-}]}^{2}} $

D) $ K _{sp}={{[A{l^{3+}}]}^{2}}{{(SO_4^{2-}]}^{2}} $

Show Answer

Answer:

Correct Answer: B

Solution:

Solubility of $ Al_2{{(SO_4)}_3} $

$ Al_2{{(SO_4)}_3} $ ⇌ $ 2A{l^{+++}}+3SO_4^{-,-} $

$ K _{sp}={{[A{l^{3+}}]}^{2}},{{[SO_4^{2-}]}^{3}} $



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