Freezing point of an aqueous solution is (-0.186)°C

• Equilibrium

Freezing point of an aqueous solution is (-0.186)°C. Elevation of boiling point of the same solution is K_b = 0.512 °C, K_f = 1.86 °C, find the increase in boiling point.

1. 0.186 °C
2. 0.092 °C
3. 0.0512 °C
4. 0.2372 °C

Answer

We know ΔT_b = mk_b and ΔT_f = mK_f

ΔT_b/ΔT_f = K_b/K_f

Find ΔT_b which would come 0.0512°C

The correct option is C.