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Three sparigly soluble salts M(2)X, MX,a...

Three sparigly soluble salts `M_(2)X, MX`,and `MX_(3)` have the same solubility product. Their solubilities will be in the order

A

`MX_(3) gt MX gt M_(2)X`

B

`MX_(3) gt M_(2)X gt MX`

C

`MX gt MX_(3) gt M_(2)X`

D

`MX gt M_(2)X gt MX_(3)`

Text Solution

Verified by Experts

The correct Answer is:
B
`M_(2)X`: Solubility of `M_(2)X = 3sqrt((K_(sp(M_(2)X)))/(4))`
`MX`: Solubility of `MX = sqrt(K_(sp(MX)))`
`MX_(3):` Solubility of `MX_(3) = 4sqrt((K_(sp(MX_(3))))/(27))`
Clearly, solubility is maximum for `MX_(3)` and then `M_(2)X`.
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