Which one of the following sulphides is only | vedclass

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(C) The precipitation of metal sulphides in acidic medium depends on the solubility product $(K_{sp})$ of the sulphide and the concentration of $S^{2-

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$CdS$

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(C) The precipitation of metal sulphides in acidic medium depends on the solubility product $(K_{sp})$ of the sulphide and the concentration of $S^{2-}$ ions.$CdS$ has a relatively higher $K_{sp}$ compared to $HgS$,$PbS$,and $CuS$.To precipitate $CdS$ completely,the concentration of $S^{2-}$ ions must be increased,which is achieved by decreasing the concentration of $H^+$ ions (i.e.,by diluting the acidic solution).Therefore,$CdS$ is the sulphide that is only completely precipitated when the acidic solution is made dilute.

Which one of the following sulphides is only completely precipitated when the acidic solution is made dilute?

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