MHT CET202311 May 2023Evening ShiftChemistrySolutionsActual
A solution of nonvolatile solute is obtained by dissolving 1.5 ~g in 30 ~g solvent has boiling point elevation 0.65 ~K . Calculate the molal elevation constant if molar mass of solute is 150 ~g ~mol ⁻¹ .
Options
- A1.95 ~K ~kg ~mol ⁻¹
- B2.23 ~K ~kg ~mol ⁻¹
- C1.52 ~K ~kg ~mol ⁻¹
- D2.72 ~K ~kg ~mol ⁻¹
Correct answer
A. 1.95 ~K ~kg ~mol ⁻¹
Step-by-step solution
aligned M ₂= 1000 . K _ b W ₂ T _ b W ₁ & ~K _ b = M ₂^2 T _ b W ₁ 1000 W ₂ & = 150 0.65 30 1000 1.5 & =1.95 ~K ~kg ~mol ⁻¹ aligned