Question Detail

CHM 102 Practice Questions Objective Question
Take CBT

Question

Which of the following sequences regarding acid-strength is correct?
Options
A HC≡CH > CH3CH2OH > CH3COOH
B HC≡CH > CH3COOH > CH3CH2OH
C CH3COOH > HC≡CH > CH3CH2OH
D CH3COOH > CH3CH2OH > HC≡CH
Correct Answer
Correct Answer

Option D is the correct answer.

Detailed Explanation

The correct order of acid strength is: CH3COOH (acetic acid, pKa ~4.8) > CH3CH2OH (ethanol, pKa ~16) > HC≡CH (acetylene, pKa ~25). Carboxylic acids are the strongest, followed by alcohols, then terminal alkynes.

Hint

How do carboxylic acids, alcohols, and alkynes compare in acidity?

Question Info

Course: CHM 102
Topic: Practice Questions
Type: Objective
Difficulty: Not specified
Question 1167 of 1999
Previous Course Details Next