Q.

Which of the following sulphides has the maximum solubility product?

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a

HgS

b

PbS

c

CuS

d

MnS

answer is D.

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Detailed Solution

The more is Ksp, the higher is solubility. Also in the presence of HCl, H2S gives less [S2-] which is sufficient only to cross over the Ksp of group II sulphide.
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