The total pressure observed by mixing two liquids A and B is 350 mm Hg when their mole fraction are 0.7 and 0.3 respectively. The total pressure becomes 410 mm Hg if the mole fractions are changed to

Question

The total pressure observed by mixing two liquids A and B is 350 mm Hg when their mole fraction are 0.7 and 0.3 respectively. The total pressure becomes 410 mm Hg if the mole fractions are changed to 0.2 and 0.8 respectively for A and B. The vapour pressure of pure A is _______ mm Hg. (Nearest integer). Consider the liquids and

Prashant Kotian · Accepted Answer

Correct answer: .. XA PA0 + XB PB0 = Ps 0.7 PA0 + 0.3 PB0 = 350 & 0.2 PA0 + 0.8 PB0 = 410  PA0 = 314 torr. | JEE(Main) 2023 | DATE : 24-01-2023 (SHIFT-2) | PAPER-1 | CHEMISTRY PAGE # 8

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