42. At
80° C the vapour pressure of pure liquid ‘A’ is 520 mmHg and that of pure liquid ‘B’ is 1000 mmHg. If a mixture of solution ‘A’ and ‘B’ boils at 80° C and 1 atm pressure the amount of ‘A’ in the mixture is
a. 34 mol percent
b. 48 mol precent
c. 50 mol precent
d. 52 mol precent
Ans. c
(8)
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