Q.

Liquids A and B form an ideal solution. At 500C , the total vapour pressure of a solution containing 1 mole of A and 2 moles of ‘B’ is 300 mm Hg. When 1 mole of ‘A’ is added to the solution the total vapour pressure increases to 400 mm Hg. Then vapour pressure of pure ‘B’ is ____mm  Hg

Moderate

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By Expert Faculty of Sri Chaitanya

answer is 100.

(Detailed Solution Below)

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Detailed Solution

300=13P0A+23P0B  On solving P0A=700,P0B=100

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