Q494
At 60° C, vapour pressure of methanol and water are 84.562 kPa and 19.953 kPa respectively. An aqueous solution of methanol at 60° C exerts a pressure of 39.223 kPa; the liquid phase and vapour phase mole fractions of methanol are 0.1686 and 0.5714 respectively. Activity co-efficient of methanol is
A.
1.572
AnswerB.
1.9398
C.
3.389
D.
4.238
Answer: Option A
Solution
Answer: Option A
Solution:
Given and and Since activity co-efficient of methanol