The boiling point of an aqueous solution of a non volatile solute is \( 100.15{ }^{\circ} \mathr...

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The boiling point of an aqueous solution of a non volatile solute is \( 100.15{ }^{\circ} \mathrm{C} \). What is the freezing point of an aqueous solution obtained by diluting the above solution with an equal volume of water? The values of \( \mathrm{K}_{\mathrm{b}} \) and \( \mathrm{K}_{\mathrm{f}} \) for water are \( 0.512 \) and \( 1.86 \mathrm{~K} \mathrm{~molality}^{-1} \) :
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