The correct option for the value of vapour pressure of a solution at 45°C with benzene to octane in molar ratio 3 : 2 is : [At 45°C vapour pressure of benzene is 280 mm Hg and that of octane is 420 mm Hg. Assume Ideal gas]

1. A. 168 mm of Hg
2. B. 336 mm of Hg
3. C. 350 mm of Hg
4. D. 160 mm of Hg

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