MHT CET20249 May 2024Evening ShiftChemistrySolutionsActual
A solution of non volatile solute has boiling point elevation 0.5 K . Calculate molality of solution [ K _ b =2.40 ~K ~kg ~mol ⁻¹ ] .
Options
- A0.12 ~mol ~kg ⁻¹
- B0.21 ~mol ~kg ⁻¹
- C0.16 ~mol ~kg ⁻¹
- D0.28 ~mol ~kg ⁻¹ .
Correct answer
B. 0.21 ~mol ~kg ⁻¹
Step-by-step solution
aligned & T _ b = K _ b m & 0.5 ~K =2.40 ~K ~kg ~mol ⁻¹ m & m = 0.5 2.40 =0.21 ~mol ~kg ⁻¹ aligned