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Question

Rank the following metal sulfides in order of increasing molar solubility in water.

SaltKsp
CoS4 x10-21
CuS6 x10-36
FeS6 x10-18
HgS1.6 x10-52
MnS2.5 x10-10

A) MnS < FeS < CoS < CuS < HgS
B) FeS < HgS < CoS < CuS < MnS
C) HgS < CuS < CoS < FeS < MnS
D) CuS < CoS < FeS < MnS < HgS
E) CoS < CuS < FeS < HgS < MnS

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