\( \mathrm{MX}_{2} \) dissociates into \( \mathrm{M}^{2+} \) and \( \mathrm{X}^{-} \)ions in an ...

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\( \mathrm{MX}_{2} \) dissociates into \( \mathrm{M}^{2+} \) and \( \mathrm{X}^{-} \)ions in an aqueous solution, with a degree of dissociation \( (\alpha) \) of 0.5 . The ratio of the observed depression of freezing point of the aqueous solution to the value of the depression of freezing point in the absence of ionic dissociation is
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