SolutionHard

Question

The vapour pressure of benzene at 30oC is 121.8 mm. By adding 15g of non-volatile solute in 250 g of benzene, its molecular weight of solute is :

Options

A.156.6g
B.267.4 g
C.356.3 g
D.467.4 g

Solution

According to Raoult′s law,


∴   m = = 356.265 g

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