Which of the following molecules interact primarily through London dispersion forces?Question 3Answera.CH3COOHb.H2Oc.CH4d.HCle.NH3

The molecule that interacts primarily through London dispersion forces among the given options is CH4 (methane).

Here's why:

London dispersion forces are the weakest intermolecular forces and occur between all types of molecules, polar or nonpolar. However, in molecules where stronger forces like hydrogen bonding or dipole-dipole interactions are present, the effect of London dispersion forces is usually negligible.

a. CH3COOH (Acetic acid) - This molecule can form hydrogen bonds because it contains a hydrogen atom attached to an oxygen atom.

b. H2O (Water) - This molecule can also form hydrogen bonds as it has hydrogen atoms attached to an oxygen atom.

c. CH4 (Methane) - This molecule is nonpolar and does not have any hydrogen atoms attached to nitrogen, oxygen, or fluorine. Therefore, it cannot form hydrogen bonds or dipole-dipole interactions. It can only interact through London dispersion forces.

d. HCl (Hydrogen chloride) - This molecule is polar and can form dipole-dipole interactions.

e. NH3 (Ammonia) - This molecule can form hydrogen bonds because it contains a hydrogen atom attached to a nitrogen atom.

So, among the given options, CH4 is the molecule that interacts primarily through London dispersion forces.