Question

Identify the intermolecular forces you would expect to play a major role in the pure liquids of the following compounds:

Ionic               H-bond           Polar               Van der Waals

a) 2-methylbutane

b) 2-butanone

c) 2-hydroxybutanal

Answer 1

Ans:

a)2-methylbutane: van der waals.

only vander waals forces will be present because it is a hydrocarbons which does not contain any polar groups.

b) 2-butanone: polar

polar forces will play major role in pure liquid of the 2-butanone.

c) 2-hydroxybutanal: H-bond

due to presence of hydroxy group hydrogen bond will present between molecules of 2-hydroxybutanal,and this bond will play major role in pure liquid of the 2-hydroxybutanal.