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JEE Main 2024 Chemistry question

ChemistrySolutionsJEE Main 2024

The vapour pressure of pure benzene and methyl benzene at 27°C is given as 80 Torr and 24 Torr, respectively. The mole fraction of methyl benzene in vapour phase, in equilibrium with an equimolar mixture of those two liquids (ideal solution) at the same temperature is × 10⁻² (nearest integer)

Answer: 23

Solution

For an equimolar mixture x = 0.5 for each. The partial pressure of methylbenzene is 0.5 × 24 = 12 Torr

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Question ID VK-016437