Question

If the boiling point of propanol is 370 K, predict the boiling point of acetic acid.

(a) 322 K

(b) 329 K

(c) 370 K

(d) 390 K

I have been asked this question during a job interview.

Enquiry is from Carboxylic Acids Physical Properties topic in section Aldehydes, Ketones and Carboxylic Acids of Chemistry – Class 12

Answer 1

Right choice is (d) 390 K

The best explanation: Acetic acid and propanol both have same molecular mass. Acetic acid should have a higher boiling point than propanol because of its stronger hydrogen bonds and the fact that it forms cyclic dimers.