For a sparingly soluble salt ` A_pB_q,` the relationship of its solubility product `(K_s) ` with its solubility (S) is

Options

A. `L_(S) = S_(p+q) p_(p) q_(q)`
B. `L_(S) = S_(p+q) p_(q) q_(p)`
C. `L_(S) = S_(p q) p_(q)q_(p)`
D. `L_(S) = S_(pq)(pq)^((p+q))`

Answer

A

Explanation

Let the solubility by `S`.
`{:(A_(p)B_(q) hArr, pA^(o+) + ,qB^(Theta)),(,pS,qS):}`
`K_(sp) = [A^(o+)]^(p) xx [B^(Theta)]^(q)`
`= [pS]^(p) xx [qS]^(q)`
`= p^(p) xx q^(q) xx S^(p+q)`