1.

Write the relationship between K_(sp) and S of PbI_(2).

Answer»

Solution :`PbI_(2)` belongs to `AB_(2)` type of salt.
`PbI_(2)hArrPb^(2+)+2I^(-)`
`[Pb^(2+)]=S" mol "dm^(-3)and[I^(-)]=2S" mol "dm^(-3)`
`K_(sp)=[Pb^(2+)][I^(-)]=(S)*(2S)^(2)`
`thereforeK_(sp)=4S^(3)`.


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