The boiling point of `0.2 mol kg^(-1)` solution of `X` in water is greater than equimolal solution of `Y` in water. Which of the following statements is true in this case?

Options

A. Molecular mass of X is less than the molecular mass of Y.
B. Y is undergoing dissociation in water while X undergoes no change.
C. X is undergoing dissociation in water.
D. Molecular mass of X is greater than the molecular mass of Y.

Answer

C

Explanation

`Delta T_(b) = iK_(b) m`
or `Delta T_(B) prop i` for equimolar solution
`therefore " " .I.` of solution ` X gt .i.` of solution y.
This is possible if X undergoes dissociaiton.