What is the mole fraction of water in a solution containing 36 g of water and 46 g of ethanol (C₂H₅OH)? (Molar masses: H
Moles of H₂O = 36/18 = 2 mol; moles of ethanol = 46/46 = 1 mol. Total moles = 3. Mole fraction of water = 2/3 ≈ 0.667.
Ref: NCERT Class 11 Chemistry > Chapter 1: Some Basic Concepts of Chemistry > Topic: Concentration Terms - Molarity Molality and Mole Fraction
