Question

Acetic acid has a boiling point of 118.5 deg C and a `K_b` of 3.08 C/m. What is the boiling point of a 3.20 m solution of `Ca(NO_3)_2` in acetic acid?

Answer 1

The solution's boiling point is approximately `148.1°C`.

Explanation:

`T_b[HC_2H_3O_2] = 118.5°C`

We want to find the boiling point elevation: `DeltaT_b`

`DeltaT_b = iK_bm`

`i[Ca(NO_3)_2] approx 3`

`DeltaT_b = 3*3.20m*(3.08°C)/m approx 29.6°C`

Add this to the pure solvent's boiling point, and that's your answer.