Question

Which of the following components form an ideal solution?

• A. Acetone and Benzene
• B. Benzene and Toluene
• C. Acetone and Ethanol
• D. Ethanol and Water

Answer 1

The correct option is B

Benzene and Toluene

The explanation for the correct option:

(B) Benzene and Toluene

• “The solutions which obey Raoult’s law over the entire range of concentration are known as ideal solutions.”
• Some examples of ideal solutions are n-hexane and n-heptane, bromoethane and chloroethane, benzene, and toluene.
• Both benzene and toluene are non-polar in nature with similar intermolecular forces. Hence, they form an ideal solution.

The explanation for the incorrect options:

(A) Acetone and Benzene

• Intermolecular forces of attraction and polarities of the solution are different in Acetone and Benzene.

(C) Acetone and Ethanol

• When Acetone and ethanol are mixed, the weakening of hydrogen bonds in ethanol takes place. Hence, an ideal solution is not formed.

(D) Ethanol and Water

• When ethanol and water are mixed, the weakening of hydrogen bonds in ethanol takes place. Hence, an ideal solution is not formed.

Hence, the correct option is B i.e. Benzene and Toluene.