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CGP EDU Academic Team
Published on: August 14, 2026
Mole fraction of the toluene in the vapour phase which is in equilibrium with a solution of benzene (p° = 120 Torr) and toluene (p° = 80 Torr) having 2.0 mol of each is
Text Solution
Verified by ExpertsThe correct answer is:
D
P T = X A p° A + X B p° B
= 
× 80 + 
× 120 = 100 Torr
Now mole fraction in vapour phase = 
= 
= 0.4.
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