1.

The vapour pressure lowering of 0.2 molal urea solution at 40°C is (assuming latent heat of vaporization \[(\Delta H)\] is 10 Kcal/mol.)

A. 0.2 torr
B. 0.1 torr
C. 0.5 torr
D. 0.3 torr
Answer» B. 0.1 torr


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