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The solubility product of CuS, CdS and HgS are `10^(-31),10^(-44),10^(-54)` respectively. The solubility of these sulphides are in the order

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The solubility product of CuS, CdS and HgS are `10^(-31),10^(-44),10^(-54)` respectively. The solubility of these sulphides are in the order
A. CdS gt HgS gt CuS
B. HgS gt CdS gt CuS
C. CdS gt CuS gt HgS
D. CuS gt CdS gt HgS
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Correct Answer - D
All are binary salts, hence their solubility is equal to square root of their solubility products. So, order of solubility is CuS gt CdS gt HgS or greater the value of solubility product, greater will be the solubility.
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