MHT CET 2024 Chemistry question
A solution of nonvolatile solute is obtained by dissolving 2 g in 50g benzene. Calculate the vapour pressure of solution if vapour pressure of pure benzene is 640 mm Hg at 25C
[mol. mass of benzene = 78 , mol.mass of solute = 64 ]
Answer: (C)
Solution
By Raoult's law for a non-volatile solute, for a dilute solution. Moles of solute ; moles of benzene . Using the dilute-solution form: $ =
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