Question

State which of the following pairs of mixtures may be seperated by simple or fractional distillation and why
1.(B.P 341.9K)+ heptane (B.P.371.6K)
2.(B.P. 351K)+ ether (B.P.307.6K)

Answer 1

1. (B.P 341.9K) + heptane (B.P.371.6K)

Mixture is separated by fractional distillation because of a difference in their boiling point is very less.

2. (B.P. 351K) + ether (B.P.307.6K)

Simple distillation - method to separate out mixture of two liquids where the difference in boiling point is large.