Find the concentration of H+ ion that must be maintained in a saturat – InterviewSolution

1.	Find the concentration of H+ ion that must be maintained in a saturated solution of H2S (0.1 M) so as to precipitate CdS not ZnS Given: [Cd2+]=[Zn2+]=(0.1 M) initially. Ksp(CdS)=8×10−27Ksp(ZnS)=1×10−21Ksp(H2S)=1.1×10−21
Answer» Find the concentration of $H^{+}$ ion that must be maintained in a saturated solution of $H_{2} S (0.1 M)$ so as to precipitate $C d S$ not $Z n S$ Given: $[C d^{2 +}] = [Z n^{2 +}] = (0.1 M)$ initially. $K_{s p} (C d S) = 8 \times 10^{- 27} K_{s p} (Z n S) = 1 \times 10^{- 21} K_{s p} (H_{2} S) = 1.1 \times 10^{- 21}$

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