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Give equation to calculate molar mass of...

Give equation to calculate molar mass of a solute based on depression in freezing point temperature.

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`M_(2)=K_(f)xx(W_(2))/(W_(1))xx(1000)/(DeltaT_(f))`.
`M_(2)=`Molar mass of solute.
`K_(f)`=molal depression constant. It's lvalue for water at 273K is 1.86 K.kg `mol^(-1)`.
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