Which of the following four fatty acids has the lowest melting point?
1) CH₃CH₂CH₂CH₂CH₂COOH
2) CH₃CH₂CH₂CH₂CH₂CH₂CH₂CH ₂CH₂COOH
3) CH₃CH₂CH₂CH₂CH₂CH₂CH₂COOH
4) CH₃CH=CHCH₂CH₂COOH

Question

Quizplus · Accepted Answer

The presence of a double bond in option 4 (CH₃CH=CHCH₂CH₂COOH) introduces a kink in the fatty acid chain, which reduces the ability of the molecules to pack closely together, resulting in a lower melting point compared to saturated fatty acids.

Which of the Following Four Fatty Acids Has the Lowest