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  4. An aqueous solution of a salt MX2 at certain temperature has a van’t Hoff factor of 2. The degree of dissociation for this solution of the salt is :

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Q. An aqueous solution of a salt $MX_2$ at certain temperature has a van’t Hoff factor of 2. The degree of dissociation for this solution of the salt is :

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Solution:

$\alpha = \frac{i - 1}{k-1}$
$= \frac{2-1}{3-1}=\frac{1}{2} = 50\%$