Question Detail

CHM 102 Practice Questions Objective Question
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Question

Among the compounds water, 1-butyne, 2-butyne, and ethane, which are stronger acids than ammonia?
Options
A 1-butyne and ethane
B water and 1-butyne
Correct Answer
C water and ethane
D 1-butyne and 2-butyne
Correct Answer

Option B is the correct answer.

Detailed Explanation

Water (pKa ~15.7) and 1-butyne (terminal alkyne, pKa ~25) are both stronger acids than ammonia (pKa ~38). 2-butyne (internal alkyne) has no acidic hydrogen, and ethane (pKa ~50) is much weaker than ammonia.

Hint

Which compounds have acidic hydrogens with lower pKa than ammonia?

Question Info

Course: CHM 102
Topic: Practice Questions
Type: Objective
Difficulty: Not specified
Question 1159 of 1999
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