Question

arrange the following molecules in order of increasing boiling point, from the expected lowest boiling point to the expected highest boiling point. Consider the strength of intermolecular forces in each molecule: PH3, Cl2, H2O, and CH4."

Answer 1

The boiling points of the molecules can be arranged in increasing order based on the strength of their intermolecular forces.

Step-by-step explanation:

The intermolecular forces in these molecules can be determined to identify their boiling points. PH3 (phosphine) has dipole-dipole forces, Cl2 (chlorine) has London dispersion forces, H2O (water) has hydrogen bonds, and CH4 (methane) has only London dispersion forces. Hydrogen bonds are stronger than dipole-dipole forces, which are stronger than London dispersion forces. So, the molecules can be arranged in increasing boiling point as follows: CH4 < Cl2 < PH3 < H2O.