Question

Given below are few mixtures formed by mixing two components, which of the following binary mixtures will have same composition is liquid and vapour phase.

(i) Ethanol +Chloroform

(ii) Nitric acid+ water

(iii) Benzene + Toluene

(iv) Ethyl chloride + Ethyl bromide

• A. (i) and (iii)
• B. (i) and (ii)
• C. (i), (ii) and (iii)
• D. (iii) and (iv)

Answer 1

Answer: (B)

(i) and (ii)

Answer 2

(iii) and (iv) will form ideal solutions hence do not form azeotropes. Azeotropes have same composition in liquid and vapour from when distilled.