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What [H^(+)] must be maintained in a sat...

What `[H^(+)]` must be maintained in a saturated `H_(2)S(0.1)M` to precipitate `CdS` but not `ZnS` if `[Cd^(2+)]=[Zn^(2+)]=0.1` initially? `K_(sp)` of ZnS = `1 X 10^(-21)` `K_a` of `H_2S` is `1.1 X 10^(-21)`

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To solve the problem of determining the concentration of \([H^+]\) that must be maintained in a saturated \(H_2S\) solution to precipitate \(CdS\) but not \(ZnS\), we will follow these steps: ### Step 1: Understand the Conditions for Precipitation To prevent the precipitation of \(ZnS\), the ionic product of \(Zn^{2+}\) and \(S^{2-}\) must be less than the solubility product (\(K_{sp}\)) of \(ZnS\). ### Step 2: Write the Expression for Ionic Product The ionic product for \(ZnS\) can be expressed as: \[ ...
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