Question

Which of the following condition is not satisfied by an ideal solution?

• A. $\Delta H_{mixing}=0$
• B. $\Delta V_{mixing}=0$
• C. Raoult's law is obeyed
• D. Formation of an azetropic mixture

Answer 1

The correct option is D Formation of an azetropic mixture

Explanation :
Those solutions in which solute-solute (B-B) and solvent-solvent (A-A) intersections are almost similar to solvent-solvent (A-B) interactions are called ideal solutions. These solutions satisfy the following requirements:

(i) $\Delta H_{mix}=0$
(ii) $\Delta V_{mix}=0$
(iii) They obey Raoult's law for all range of concentration and temperature. Examples of Ideal solution. Hexane + Heptane, Ethyl bromide + Ethyl chloride, Chlorobenzene + Bromobenzene, Benzene + Toluene etc.