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Pure A: 300, pure B: 600 mm Hg; ideal liquid xB = 0.25. What is yB in the vapour?
A0.60
B0.40
C0.50
D0.25
Answer & Solution
Correct answer: B. 0.40
pA = 0.75 × 300 = 225 and pB = 0.25 × 600 = 150 mm Hg, so yB = 150/375 = 0.40.
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