Rank the following compounds in order of decreasing boiling point, putting the compound with the highest boiling point first.

Question

Quizplus · Accepted Answer

Each compound listed has London dispersion forces, which are a function of molecular weight and surface area. Compound III has the highest molecular weight and surface area, thus making it the highest boiling point compound. Compound II has the second highest molecular weight and surface area, followed by IV and then I. Therefore, the correct order is III > II > IV > I. Choice C is the only one that lists this order.

Rank the Following Compounds in Order of Decreasing Boiling Point