Question

Ion-dipole interactions can occur between any ion and any molecule with a dipole. Identify all of the following pairs of species that can interact via ion-dipole forces. Select all that apply.

H2O and CH3OH

Li+ and ClO2−

NO3− and CH4

Li+ and H2O

CH3OH and Na+

Cs+ and CH3CH2Cl

Answer 1

H2O and CH3OH both are having dipoles so interactions are dipole-dipole interactions.

Li+ and ClO2- both are ions so interactions are ion-ion interactions.

NO3- is ion and CH4 is non polar compound. So there is no chance to ion-dipole interactions

Li+ is ion and H2O has dipole so it has ion-dipole interactions.

CH3OH has dipole and Na+ ion so it has ion-dipole interactions.

Cs+ is ion and CH3CH2Cl has dipole so it has ion-dipole interactions.

Hence Pairs of species that can interact via ion-dipole forces are

Li+ and H2O

CH3OH and Na+

Cs+ and CH3CH2Cl