Answer to Question #269944 in Physical Chemistry for Dolphy

Question

Arrange the following in order of increasing boiling point: RbF, CO2, CH3OH, CH3Br. Explain your

reasoning

Answer 1

CO2 < CH3Br < CH3OH < RbF.

The least boiling point {CO2 }.

Highest boiling point {RbF}.This order is attributed to the intermolecular force between each molecule.

CO2- dispersion forces

CH3BrCHX3Br - dispersion and dipole-dipole

CH3OHCHX3OH - dispersion, dipole-dipole, and hydrogen bonding

RbFRbF - ionic {also it's a salt and generally salts possess high boiling point .