Four pure substances are placed in identical, sealed vials kept at 25∘C.
1. CH4
2. CO2
3. HCl
4. NH3
Each substance exists as a liquid under the pressure conditions in the vial.
a. Rank the four liquids from highest to lowest average strength of intermolecular attraction between adjacent molecules.
b. For each consecutive pair in your ranking, justify the ordering by identifying the dominant intermolecular attraction present and explaining why it is stronger than the dominant attraction in the substance immediately below it.