MHT CET202019 Oct 2020Evening ShiftChemistrySolutionsActual
The vapour pressure of solvent decreases by 10 ~mm Hg if mole fraction of non volatile solute is 0.2 Calculate vapour pressure of solvent.
Options
- A50 ~mm of Hg
- B70 ~mm of Hg
- C40 ~mm of Hg
- D60 ~mm of Hg
Correct answer
A. 50 ~mm of Hg
Step-by-step solution
(A) array l P ₀- P =10 ~mm of Hg , x ₂=0.2 P ₀=? array According to Raoult's Law array l P ₀- P P ₀ = x ₂ 10 ~mm of Hg P ₀ =0.2 P ₀=50 ~mm of Hg array