A) \[AgS\,({{K}_{sp}}=6\times {{10}^{-29}})\]
B) \[CuS\,({{K}_{sp}}=4\times {{10}^{-27}})\]
C) \[PbS\,({{K}_{sp}}=8\times {{10}^{-28}})\]
D) \[ZnS\,({{K}_{sp}}=8\times {{10}^{-30}})\]
Correct Answer: B
Solution :
Key Idea: Greater the solubility product, more will be amount of sulphur obtained: \[\because \] \[{{K}_{sp}}\] is highest for \[CuS\]. \[\therefore \] Maximum amount of S is given by \[CuS\].
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