A) \[108\times {{10}^{-25}}\]
B) \[1.0\times {{10}^{-25}}\]
C) \[144\times {{10}^{-25}}\]
D) \[126\times {{10}^{-24}}\]
Correct Answer: A
Solution :
\[\underset{\text{s}\,\text{mol/L}}{\mathop{S{{b}_{2}}{{S}_{3}}}}\,\underset{2s}{\mathop{2S{{b}^{3+}}}}\,\underset{3s}{\mathop{3{{S}^{2-}}}}\,\] Solubility product \[({{K}_{sp}})=[S{{b}^{3+}}]{{[{{S}^{2-}}]}^{3}}\] \[={{(2s)}^{2}}{{(3s)}^{2}}=108{{s}^{5}}\] \[=108\times {{(1.0\times {{10}^{-5}})}^{5}}=108\times {{10}^{-25}}\]
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