Question

One litre solution "x" has"x"g of urea dissolved in it.another one litre solution"y" has "x"g of kcl dissolved in it. Find the ratio of lowering of vapour pressure of the solution x and y

Answer 1

Answer:

and a oop

Explanation:

Answer 2

Answer:

1 : 1.6

Explanation:

The ratio of concentration = The ratio of number of moles

The mole ratio =x60:x74.6=7.46:6

Urea is unionised even in dilute solutions and hence, van.t Hoff factor, i = 1. KCl is almost ionised in dilute solutions and hence, van.t Hoff factor, i 2. Hence the ratio of particles in two solutions 7.46 : 6 x 2

=7.46 : 12 =1 : 16

Since lowering of vapour pressure is a colligative property, the ratio of lowering = 1: 1.6