MCQ
Which metal sulphide is soluble in excess $NH_3$ solution ?
- A$ZnS$
- B$MnS$
- C$FeS$
- ✓$Cr_2S_3$
✓
Answer
Correct option: D.
$Cr_2S_3$
d
$ZnS,\,MnS,\,FeS$ do not dissolve in excess $NH_3$ solution due to their low $K_{sp}$ values.
$ZnS,\,MnS,\,FeS$ do not dissolve in excess $NH_3$ solution due to their low $K_{sp}$ values.
$C{r_2}{S_3} + 6N{H_3}\, \rightleftharpoons \,{[Cr{(N{H_3})_6}]^{3 + }}\, + \,{S^{2 - }}(aq.)$
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