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CHM 102 Fundamentals of Amines: Nomenclature, Isomerism, and Synthesis Objective Question
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Question

Which of the following correctly represents the basicity order of amines in aqueous solution?
Options
A CH3NH2 > (CH3)3N > (CH3)2NH > NH3
B (CH3)2NH > CH3NH2 > (CH3)3N > NH3
Correct Answer
C NH3 > (CH3)3N > (CH3)2NH > CH3NH2
D (CH3)3N > (CH3)2NH > CH3NH2 > NH3
Correct Answer

Option B is the correct answer.

Detailed Explanation

In water, the order is typically (CH3)2NH > CH3NH2 > (CH3)3N > NH3 due to a combination of inductive effects and solvation/hydrogen bonding effects. (CH3)3N is less basic due to poor solvation of the ammonium ion.

Hint

Secondary amines are often most basic in water.

Question Info

Course: CHM 102
Topic: Fundamentals of Amines: Nomenclature, Isomerism, and Synthesis
Type: Objective
Difficulty: Not specified
Question 287 of 1999
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