CBSE Class 12 Chemistry 2022 Term 1 Paper

Question : 35

Total: 55

The boiling point of a 0.2m solution of a nonelectrolyte in water is (Kb. for water =0.52K‌kg mol−1 )

100∘C
100.52∘C
100.104∘C
100.26∘C

Solution:

Molality of solution =0.2m
Kb of water =0.52K‌kg‌mol−1
Boiling Point Elevation

For most non-electrolytes dissolved in water, the van't Hoff factor is essentially 1 .
Hence, Elevation in Boiling point =0.52×0.2= 0.104C∘
Therefore,
Boiling point =100+0.104=100.104C∘

Go to Question:

Prev Question

Next Question