Write the relatioship between K_(sp) and S of BaSO_(4) and AgCl.

1.	Write the relatioship between K_(sp) and S of BaSO_(4) and AgCl.
Answer» Solution :Both `BaSO_(4)` and AgCl belong to AB type of salts. (a) Let the solubility of AgCl be S MOL `DM^(-3)` `AgCl_((s))hArrAg_((aq))^(+)+Cl_((aq))^(-)` `[Ag^(+)]=S" mol "dm^(-3)and[Cl^(-)]=S" mol "dm^(-3)` `thereforeK_(sp)=[Ag^(+)][Cl^(-)]=SS=S^(2)` (B) Let the solubility of `BaSO_(4)` be S mol `dm^(-3)` `BaSO_(4(s))hArrBa_((aq))^(2+)+SO_(4(aq))^(2-)` `[Ba^(2+)]=S" mol "dm^(-3)and[SO_(4)^(2-)]=S" mol "dm^(-3)` `thereforeK_(sp)=[Ba^(2+)][SO_(4)^(2-)]=S*S=S^(2)`

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