Question Detail

CHM 102 Fundamentals of Alkanes: Properties and Preparation Methods Objective Question

Question

How does branching affect the boiling point of alkanes?
Options
A More branching increases boiling point
B More branching decreases boiling point
Correct Answer
C Branching has no effect
D Only chain length matters
Correct Answer

Option B is the correct answer.

Detailed Explanation

Increased branching makes the molecule more compact, reducing surface area and London dispersion forces, thus lowering boiling point.

Hint

Think of a sphere vs. a long chain.

Question Info