A) \[3\times {{10}^{-2}}\,M\]
B) \[[S{{n}^{2+}}]\,\,{{[{{S}^{2-}}]}^{2}}\]
C) \[[S{{n}^{2+}}]\,\,[2{{S}^{2-}}]\]
D) \[[S{{n}^{4+}}]\,\,{{[2{{S}^{2-}}]}^{2}}\]
Correct Answer: A
Solution :
\[Sn{{S}_{2}}\] ⇌ \[S{{n}^{4+}}+2{{S}^{2-}}\] \[\therefore \,{{K}_{sp}}=[S{{n}^{4+}}]\,\,{{[{{S}^{2-}}]}^{2}}\]
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