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Pure A and B have vapour pressures 200 and 400 mm Hg. Ideal total at xB = 0.5?
A300 mm Hg
B200 mm Hg
C400 mm Hg
D600 mm Hg
Answer & Solution
Correct answer: A. 300 mm Hg
p(total) = 0.5 × 200 + 0.5 × 400 = 100 + 200 = 300 mm Hg.
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