MHT CET202311 May 2023Morning ShiftChemistrySolutionsActual
What is vapour pressure of a solution containing 1 ~mol of a nonvolatile solute in 36 ~g of water ( P ₁^0=32 ~mm Hg ) ?
Options
- A8.14 ~mm Hg
- B12.31 ~mm Hg
- C16.08 ~mm Hg
- D21.44 ~mm Hg
Correct answer
D. 21.44 ~mm Hg
Step-by-step solution
aligned & n ₂=1 ~mol & n ₁= 36 18 =2 ~mol aligned Relative lowering of vapour pressure = P ₁^0- P ₁ P ₁^0 =x₂= n ₂ n ₁+ n ₂ array ll & 32 ~mm Hg - P ₁ 32 ~mm Hg = 1 3 & 96 ~mm Hg -3 P ₁=32 ~mm Hg & 64 ~mm Hg =3 P ₁ & P ₁=21.33 ~mm Hg 21.44 ~mm Hg array