Question

what kind of intermolecular forces act between a chloroacetylene (c2hcl) molecule and a sodium cation? note: if there is more than one type of intermolecular force that acts, be sure to list them all, with a comma between the name of each force.

Explanation:

Chloroacetylene ($C_2HCl$) is a polar - covalent molecule due to the electronegativity difference between carbon, hydrogen and chlorine. A sodium cation ($Na^+$) is a positively - charged ion. Ion - dipole forces occur between an ion and a polar molecule. The positive sodium cation will be attracted to the negative end of the polar chloroacetylene molecule. Also, London dispersion forces are present between all molecules and ions, so they are present here too.

Answer:

Ion - dipole forces, London dispersion forces