A) \[NiS\]and \[PbS\]
B) \[NiS\]and \[CoS\]
C) \[CoS\]and\[NiS\]
D) \[PbS\]and\[NiS\]
Correct Answer: D
Solution :
For precipitation, ionic product > solubility product \[\therefore \]The metal sulphide with lowest\[{{K}_{sp}}(PbS)\]will precipitate out first because its ionic product will exceed its\[{{K}_{sp}}\]first and the metal sulphide with lowest\[{{K}_{sp}}(NiS)\]will precipitate out at last.You need to login to perform this action.
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