question_answer

In an experiment, 1 g of a non-volatile solute was dissolved in 100 g of acetone (mol. mass = 58) at 298K. The vapour pressure of the solution was found to be 192.5 mm Hg. The molecular weight of the solute is (vapour pressure of acetone = 195 mm Hg) [CPMT 2001; CBSE PMT 2001; Pb CET 2002]

A)                 25.24     

B)                 35.24

C)                 45.24     

D)                 55.24