A) \[[S{{n}^{2+}}]\,{{[{{S}^{2-}}]}^{2}}\]
B) \[[S{{n}^{4+}}]\,{{[{{S}^{2-}}]}^{2}}\]
C) \[[S{{n}^{2+}}]\,[2{{S}^{2-}}]\]
D) \[[S{{n}^{2+}}]\,{{[2{{S}^{2-}}]}^{2}}\]
Correct Answer: A
Solution :
\[Sn{{S}_{2}}+aq\rightleftharpoons \underset{solution}{\mathop{Sn{{S}_{2}}}}\,\rightleftharpoons S{{n}^{2+}}+2{{S}^{2-}}\] Applying law of mass action to this equilibrium \[K=\frac{[S{{n}^{2+}}]{{[{{S}^{1-}}]}^{2}}}{[Sn{{S}_{2}}]}\] Or \[K{{[Sn{{S}_{2}}]}_{4}}=[S{{n}^{2+}}]{{[S{{n}^{2-}}]}^{2}}\] since \[[Sn{{S}_{2}}],\] in solid state remain constant and therefore, \[{{K}_{sp}}=[S{{n}^{2+}}]\,{{[{{S}^{2-}}]}^{2}}\]
You need to login to perform this action.
You will be redirected in
3 sec
