A solution containing compound X in water and a solution containing urea in water were put in a closed system. By doing this some water vapour was removed from one solution and got condensed in the other. It is found that when both the solutions were at equilibrium vapour pressure, one solution contains 2% of X and the other 5% by weight. Find the molecular weight of X.

A solution containing compound X in water and a solution containing ur

1.	A solution containing compound X in water and a solution containing urea in water were put in a closed system. By doing this some water vapour was removed from one solution and got condensed in the other. It is found that when both the solutions were at equilibrium vapour pressure, one solution contains 2% of X and the other 5% by weight. Find the molecular weight of X.
Answer» SOLUTION : At EQUILIBRIUM, the RELATIVE lowering of vapour pressure of the TWO solutionsis equal. 23.26