Question

If for a sucrose solution elevation in boiling point is 0.1°C then what will be the boiling point of NaCl solution for same molal concentration.

• A. 0.1°C
• B. 0.2°C
• C. 0.08°C
• D. 0.01°C

Answer 1

Answer: (B)

0.2°C

Answer 2

Elevation in a boiling point is a colligative property as it depends upon the number of particles.

∆T_b ∝ n

For sucrose, n = 1, ∆T_b = 0.1°C

For NaCl, n = 2, ∆T_b = 0.2°C