Question

$M{X}_2$ dissociates in $M^{2+}$ and $X^{-}$ ions in an aqueous solution with a degree of dissociation $0.5\left(\alpha \right)$. The ratio of the observed depression of the freezing point of the aqueous solution to the value of the depression of freezing point in the absence of ionic dissociation is______.

Answer 1

$M{X}_2\rightleftharpoons M^{2+}+2X^{-}$
$1-\alpha$ $\alpha$ $2\alpha$

Where, $\alpha$ is the degree of dissociation.

$i=1+2\alpha$ $\{\alpha =0.5\}$

Therefore, $i=2$.