alleryRaoult's law for an ideal solution (one component A in solvent S) is:
AP_A = x_A P_A_pure
BP_total = sum of pure pressures
CP_A = x_A
DP_A = (1-x_A) P_A_pure
Answer & Solution
Correct answer: A. P_A = x_A P_A_pure
**Raoult's law:** partial pressure of A above solution = x_A × P_A_pure (vapour pressure of pure A).
Sum over components gives total vapour pressure.
Keep practising Unit 3B1: Solutions and Concentrations
Browse all Unit 3B1: Solutions and Concentrations questions for JEE Advanced, or explore more Chemistry topics.
Related questions
Hydrogenation of vegetable oils to make margarine uses catalyst:Adsorption isotherm:Freezing-point depression and elevation are colligative properties: depend on:For a 1 m glucose aqueous solution (i = 1), boiling point:For salt CaCl₂ (assume full dissociation), i =For 0.1 M acetic acid (Ka = 1.8 × 10⁻⁵), van't Hoff factor i is:For solution of urea (M_w = 60 g/mol) with 6 g in 100 g water, molality:Osmotic pressure of 0.01 M sucrose solution at 27°C (R = 0.0821 L atm/mol K):