Q.

An aqueous solution containing 5% by weight of urea and 10% by weight of glucose. What will be the ΔTf of the solution (Kf for H2O is 1.860K-molal)

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answer is 3.

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Detailed Solution

ΔTf=ΔTurea +ΔTglucose ;ΔTf=Kf×m=1.86×560×100085+1.86×10180×100085=3.043

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An aqueous solution containing 5% by weight of urea and 10% by weight of glucose. What will be the ΔTf of the solution (Kf for H2O is 1.860K-molal)