At a certain temperature, the solubility of the salt `M_(m)A_(n)` in water is s moles per litre. The solubility product of the salt is :

Options

A. `M^(m)A^(n)`
B. `(m+n)s^(m+n)`
C. `m^(m)n^(n)s^(m+n)`
D. `M^(m)A^(n)s`

Answer

C

Explanation

`M_(m)A_(n)hArr mM^(+)+nA^(-)`
The solubility is s
`[M^(+)]=ms, [A^(-)]=ns`
`K_(sp)=[M^(+)]^(m)[A^(-)]^(n)`
`= (ms)^(m)(ns)^(n)=m^(m)n^(n)s^(m+n)`