A) \[{{x}^{3}}\]
B) \[4{{x}^{4}}\]
C) \[{{x}^{4}}\]
D) \[4{{x}^{3}}\]
Correct Answer: B
Solution :
\[KAl{{(S{{O}_{4}})}_{2}}\xrightarrow{{}}\underset{+}{\mathop{{{K}^{+}}}}\,+{{\underset{+}{\mathop{Al}}\,}^{3+}}+\underset{2x}{\mathop{2SO_{4}^{2-}}}\,\] \[{{K}_{sp}}=[{{K}^{+}}]\,[A{{l}^{3+}}]\,{{[SO_{4}^{2-}]}^{2}}\] \[=(x)\,(x)\,{{(2x)}^{2}}=4{{x}^{4}}\]
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