MHT CET202123 Sep 2021Evening ShiftChemistrySolutionsActual
What is vapour pressure of solution containing 1.8 ~g glucose in 16.2 ~g water? ( P ₁^0=24 ~mm Hg and Molar mas of gloucose =180 ~g ~mol ⁻¹ )
Options
- A18.1 ~mm Hg
- B15.7 ~mm Hg
- C12.4 ~mm Hg
- D23.8 ~mm Hg
Correct answer
D. 23.8 ~mm Hg
Step-by-step solution
aligned & P ^0- P _ s P ^0 = X _ solute = n _ solute n _ solute + n _ solvent & n _ glucose = 1.8 180 =0.01 & n _ water = 16.2 18 =0.9 & 24- P _ s 24 = 0.01 0.01+0.9 = 1 91 & (24- P _ s ) 91=24 & P _ s =24- 24 91 =23.8 ~mm Hg aligned