Question

In the context of small molecules with similar molar masses, arrange these intermolecular forces by strength (hydrogen bonding - London dispersion forces - dipole-dipole interactions) Strongest ----> weakest

Answer 1

Concepts and reason

The set of repulsive and attractive forces between molecules that results from the polarity is represented as intermolecular force. There are types of intermolecular forces:

Hydrogen bonding

London dispersion force

Dipole–dipole force.

Fundamentals

Hydrogen bond: Hydrogen is bonded to a strong electronegative atom.

Dipole–dipole: This force takes place between two polar compounds.

London dispersion force: This force is present in all compounds (weak force).

In general, strongest to weakest intermolecular force:

Hydrogen bond > Dipole – Dipole > London dispersion force

For small molecules with similar molar masses, the strength of intermolecular force is as follows:

From strongest to weakest:

Hydrogen bond > Dipole – Dipole > London dispersion force

Ans:

For small molecules with similar molar masses, the strength of intermolecular force is as follows:

From strongest to weakest:

Hydrogen bond > Dipole – Dipole > London dispersion force