MHT CET202121 Sep 2021Morning ShiftChemistrySolutionsActual
What is vapour pressure of a solution containing 0.1 ~mol of non-volatile solute dissolved in 16.2 ~g of water? ( P ₁^ =32 ~mm Hg )
Options
- A21.6 ~mm Hg
- B28.8 ~mm Hg
- C15.7 ~mm Hg
- D18.1 ~mm Hg
Correct answer
B. 28.8 ~mm Hg
Step-by-step solution
aligned & P ^ - P _ s P ^ = X _ solute & 32- P _ s 32 = n _ solute n _ solute + n _ solvent & n _ solvent = n _ water = 16.2 18 =0.9 & 32- P _ s 32 = 0.1 0.1+0.9 =0.1 & 32- P _ s =32 0.1 & P _ s =32-3.2 & =28.8 ~mm Hg aligned