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Write the relationship between K(sp) and...

Write the relationship between `K_(sp)` and S for an AB type of salt.

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Consider an electrolyte AB whose solubility is S mol `dm^(-3)`.
In a saturated solution, `AB_((s))hArrA^(+)+B^(-)`
`[A^(+)]=S" mol "dm^(-3)and(B^(-))=S" mol "dm^(-3)`
`K_(s)=[A^(+)][B^(-)]=S*S=S^(2)(or)K_(sp)=S^(2)`.
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