1.

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

Answer»

X is undergoing dissociation in water.
Molecular mass of X is greater than the molecular mass of Y.
Molecular mass of X is less than the molecular mass of Y.
Y is undergoing dissociation in water while X undergoes no CHANGE.

SOLUTION :`(Delta T_(B))_(x)gt (Delta T_(b))_(y)`
same SOLVENT so, `K_(b)` is same
m is same (given)
`i_(x).K_(b).m gt i_(y).K_(b).m rArr i_(x)gt i_(y)`
so, X is undergoing dissociation in water.


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