MHT CET 2026 Chemistry question
Calculate the mole fraction of solute in solution if vapour pressure of a solution and pure solvent are 27 mm Hg and 30 mm Hg respectively at 298 K.
Answer: (B)
Solution
For a solution of a non-volatile solute, Raoult's law gives the relative lowering of vapour pressure equal to the mole fraction of the solute: . Here and $p
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