1.

Normal freezing point of a solvent is 5^(@)C A 0.5 nilal solution of urea in the this solvent causes freezing point depression of two degrees. Calculate the molal depression constant.

Answer»


Solution :`DeltaT_(F)=2^(@)C=2" K MOLALITY",m=0.5 m, DeltaT_(f)=K_(f)m`
`K_(f)=(DeltaT_(f))/m=(2K)/(0.5m)=4KM^(-1)`


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