Question

At 25°C, the saturated vapour pressure of water is 3.165 k Pa (23.75 mm Hg) Find the saturated vapour pressure of a 5% aqueous solution of urea (carbamide) at the same temperature. (Molar mass of urea = 60.05 g mol^-1)

Answer 1

Given p° = 3.165 k Pa, W₂ = 5 g, W₁ = 95 g M₂ = 60.05 g mol^-1, M₁ = 18 g mol^-1