Which of the following liquid pairs shows a positive deviation from Raoult’s law?

Question

Which of the following liquid pairs shows a positive deviation from Raoult’s law? (A) Water - hydrochloric acid (B) Acetone - chloroform (C) Water - nitric acid (D) Benzene - methanol

Tardigrade Admin · Accepted Answer

Benzene in methanol breaks the H - bonding of the alcohol making its boiling point decrease there by its vapour pressure increases leading two +ve deviation.

Q. Which of the following liquid pairs shows a positive deviation from Raoult’s law?

Water - hydrochloric acid

Acetone - chloroform

Water - nitric acid

Benzene - methanol

Benzene in methanol breaks the H - bonding of the alcohol making its boiling point decrease & there by its vapour pressure increases leading two +ve deviation.