First slide

Colligative properties, Elevation of boling point (EBP)

Question

The order of boiling points of four equimolar aqueous solutions is C < B < A < l). The correct order of their freezing points is

Easy

A

D<C<B<A
B

D>C<B<A
C

D<B>A<C
D

D>A>B>C

Solution

Elevation in boiling point and depression in freezing point, both are the colligative properties, i.e. depend only upon the number of particles present in solution. In other
words, as the number of particles increases, boiling point increases but freezing point decreases. Since, the order of boiling point is C<B<A<D.
$∴$ The order of freezing point will be D<A<B<C or D<B>A<C

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