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12. The vapour pressure of benzene at a certain temperature is 640 mm of Hg. A non volatile and non electrolyte solid weighing 2.175 g is added to 39.08 g of benzene. The vapour pressure of the solutions is 600 mm of Hg. What is the molecular weight of solid substance

a. 49.50

b. 59.6

c. 69.5

d. 79.8

Ans. c

(44)

5/5 - (1 vote)

PrevPrevious3.Two liquids X and Y form an ideal solution. At 300 K, vapour pressure of the solution containing 1 mole of X and 3 mol of Y is 550 mmHg. At the same temperature, if 1mol of Y is further added to this solution, vapour pressure of the solution increase by 10mmHg, Vapour pressure of X and Y in their pure states will be respectively

Next13. 60g of Urea was dissolved in 9.9 moles, of water. if the vapour pressure of pure water isNext

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