Question

The vapour pressure of a dilute aqueous solution of sucrose at 373 K is 756 mm ng . what is the molality of this solution

Answer 1

Answer:

0.73m

Explanation:

At 373K V.P of water is 750 mm Hg

We know that, (P0-P) / P0 = w x M / m x W

molality = (P0-P) / P0 X 1000/M

=> (760-750) / 760 X 1000/18

=> 0.73 m