Which of the following binary mixtures will have the same composition in the liquid and vapour phase?
(i) Benzene – Toluene
(ii) Water-Nitric acid
(iii) Water-Ethanol
(iv) n-Hexane – n-Heptane
The answer is the option (ii, iii) Water-Nitric acid and Water-Ethanol solutions have the same composition in liquid and vapour phases