1.

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 :

Answer»

`M^(m)A^(n)`
`(m+n)s^(m+n)`
`m^(m)n^(n)s^(m+n)`
`M^(m)A^(n)s`

Solution :`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)`


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