JEE Advanced 2016 Chemistry question
The mole fraction of a solute in a solution is 0.1. At 298 K, molarity of this solution is the same as its molality. Density of this solution at 298 K is 2.0 g cm. The ratio of the molecular weights of the solute and solvent, , is
Answer: 9
Solution
Take 1 mol solute (molar mass ) and 9 mol solvent (molar mass ). Molality . Mass of solution g, volume
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