Question

What type of intermolecular forces exist between $N{H}_3$ and $C_6{H}_6$ ?

• A. Dispersion forces
• B. Dipole-dipole forces
• C. Dipole-induced dipole forces and dispersion forces
• D. Dispersion and dipole-dipole forces

Answer 1

Answer: (C)

$N{H}_3$ is polar and $C_6{H}_6$ is non-polar. $N{H}_3$ molecule, being a dipole, induces a dipole in the non-polar $C_6{H}_6$ molecule. Dipole-induced dipole forces exist among the molecule of $N{H}_3$ and $C_6{H}_6$ . Since dispersion forces exist among species of any type, therefore, dispersion forces also exist. Hence, forces are dipole-induced dipole force and dispersion forces.