A solution is made by dissolving 15 g of a solute (molar mass = 30 g/mol) in water. If the boiling point elevation is 0.
Moles = (15/30) = 0.5 . Δ Tb = Kb · m . 0.26 = 0.52 × (0.5/w) , w = (0.5 × 0.52/0.26) = 1 kg = 1000 g .
Ref: NCERT Class 12 Chemistry > Chapter 1: Solutions > Topic: Colligative Properties - Depression of Freezing Point
