A) MnS and CuS
B) NiS and HgS
C) MnS and NiS
D) CuS and HgS
Correct Answer: D
Solution :
The black precipitate of CuS and HgS will be formed. \[C{{u}^{2+}}+{{H}_{2}}S\xrightarrow{{}}CuS(black)\downarrow +{{H}_{2}}\uparrow \] \[H{{g}^{2+}}+{{H}_{2}}S\xrightarrow{{}}HgS(black)\downarrow +{{H}_{2}}\uparrow \]You need to login to perform this action.
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