Which metal sulphide is soluble in excess NH₃ solution ?

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6-2.Equilibrium-II (Ionic Equilibrium)

hard

Which metal sulphide is soluble in excess $NH_3$ solution ?

A

$ZnS$

B

$MnS$

C

$FeS$

D

$Cr_2S_3$

Solution

$ZnS,\,MnS,\,FeS$ do not dissolve in excess $NH_3$ solution due to their low $K_{sp}$ values.

$C{r_2}{S_3} + 6N{H_3}\, \rightleftharpoons \,{[Cr{(N{H_3})_6}]^{3 + }}\, + \,{S^{2 – }}(aq.)$

Standard 11

Chemistry

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