Previous Year NEET Question- Solution L-8

Question: The mixture which shows positive deviation from Raoult’s law is#

A) Benzene + toluene

B) Acetone + chloroform

C) Chlorethane + bromoethane

D) Ethanol + acetone.

Answer: Ethanol + acetone.#

Solution:#

Let us study the nature of binary solutions made of two volatile liquids:

(a) (Benzene + Toluene) Ideal solution, obeys Raoult’s law.

(b) (Acetone + Chloroform) Non-ideal solution, shows negative deviation from Raoult’s law.

(c) (Chloroethane + Bromoethane) Ideal solution, obeys Raoult’s law.

(d) (Ethanol + Acetone) Non-ideal solution, shows positive deviation from Raoult’s law.