Rank the following in terms of increasing boiling point (least to most).

Question

Quizplus · Accepted Answer

The boiling point of a substance is related to its intermolecular forces. In this case, all three substances are alcohols, which have hydrogen bonding as their strongest intermolecular force. However, the length of the carbon chain affects the strength of dispersion forces, which also contribute to the boiling point. As the length of the carbon chain increases, the strength of dispersion forces also increases, leading to higher boiling points. Therefore, the alcohol with the shortest carbon chain (I) will have the lowest boiling point, followed by the alcohol with the medium length carbon chain (II), and finally the alcohol with the longest carbon chain (III), which will have the highest boiling point. Therefore, choice C (I, II, III) is the correct answer.

Rank the Following in Terms of Increasing Boiling Point (Least