A) \[A{{g}_{2}}S>HgS>CuS\]
B) \[HgS>CuS>A{{g}_{2}}S\]
C) \[HgS>A{{g}_{2}}S>CuS\]
D) \[A{{g}_{2}}S>CuS>HgS\]
Correct Answer: D
Solution :
\[A{{g}_{2}}S>CuS>HgS\]. Solubility of CuS \[=\sqrt{{{10}^{-31}}}=3.16\times {{10}^{-16}}\,\,mol/lit.\] Solubility of \[A{{g}_{2}}S\] \[=\sqrt[3]{\frac{{{K}_{sp}}}{4}}=\sqrt[3]{\frac{{{10}^{-42}}}{4}}=6.3\times {{10}^{-5}}mole/litre\] Solubility of HgS \[=\sqrt{{{K}_{sp}}}=\sqrt{{{10}^{-54}}}\] \[={{10}^{-27}}\,\,mol/litre.\]You need to login to perform this action.
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