Which metal sulphide is soluble in excess NH3 solution?

Question

Which metal sulphide is soluble in excess NH3 solution? (A) ZnS (B) MnS (C) FeS (D) Cr2S3

Tardigrade Admin · Accepted Answer

Here Cr2S3 is soluble in excess of ammonia while ZnS, MnS, FeS do not dissolve in excess NH3 solution due to their low Ks p values. Cr 2 S 3+6 NH 3 leftharpoons[ Cr ( NH 3)6]3++ S 2-( aq )

Q. Which metal sulphide is soluble in excess $N H_{3}$ solution?

ZnS

MnS

FeS

$C r_{2} S_{3}$

Here $C r_{2} S_{3}$ is soluble in excess of ammonia while ZnS, MnS, FeS do not dissolve in excess $N H_{3}$ solution due to their low $K_{s p}$ values.

$C r_{2} S_{3} + 6 N H_{3} ⇌ [C r (N H_{3})_{6}]^{3 +} + S^{2 -} (a q)$

Q. Which metal sulphide is soluble in excess NH3​ solution?

ZnS

MnS

FeS

Cr2​S3​

Here Cr2​S3​ is soluble in excess of ammonia while ZnS, MnS, FeS do not dissolve in excess NH3​ solution due to their low Ksp​ values. Cr2​S3​+6NH3​⇌[Cr(NH3​)6​]3++S2−(aq)

Q. Which metal sulphide is soluble in excess $N H_{3}$ solution?

$C r_{2} S_{3}$

Here $C r_{2} S_{3}$ is soluble in excess of ammonia while ZnS, MnS, FeS do not dissolve in excess $N H_{3}$ solution due to their low $K_{s p}$ values.

$C r_{2} S_{3} + 6 N H_{3} ⇌ [C r (N H_{3})_{6}]^{3 +} + S^{2 -} (a q)$