Question
The normal boiling point of Ethyl acetate is 77^ C . A solution of non-volatile non-electrolyte solute in ethyl acetate boils at 78^ C . K_b for ethyl acetate is 2.77\ ^ C kg mol ^ -1 . What is the molality of the solution ?
MHT CET
Chemistry
Solutions
2026
MHT CET 2026 (16 April Shift 2)
MHT CET Chemistry Question (2026) — Solution
Options
- A. 0.361\ m
- B. 0.052\ m
- C. 0.075\ m
- D. 0.25\ m
Answer
A. 0.361\ m
Step-by-step solution
The elevation in boiling point is given by T_b = T_b - T_b^ Substituting the given values: T_b = 78^ C - 77^ C = 1^ C For a non-volatile, non-electrolyte solute, the elevation in boiling point is related to molality m by the formula T_b = K_b m 1 = 2.77 m m = 1 2.77 = 0.361\ m Answer: 0.361\ m
Related: Chemistry — Solutions · All PYQ Banks