MHT CET20239 May 2023Evening ShiftChemistrySolutionsActual
A solution of nonvolatile solute is obtained by dissolving 1 ~g in 100 ~g solvent, decreases its freezing point by 0.3 ~K . Calculate cryoscopic constant of solvent if molar mass of solute is 60 ~g ~mol ⁻¹ .
Options
- A1.0 ~K ~kg ~mol ⁻¹
- B1.4 ~K ~kg ~mol ⁻¹
- C2.4 ~K ~kg ~mol ⁻¹
- D1.8 ~K ~kg ~mol ⁻¹
Correct answer
D. 1.8 ~K ~kg ~mol ⁻¹
Step-by-step solution
aligned T _ f & = 1000 ~K _ f W ₂ M ₂ ~W ₁ K _ f & = T _ f M ₂ ~W ₁ 1000 ~W ₂ & = 0.3 ~K 60 ~g ~mol ⁻¹ 100 ~g 1000 1 ~g & =1.8 ~K ~kg ~mol ⁻¹ aligned