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Problem 6 - Olympiad
The correct order of basicity in liquid NH3 is:
A. NH2^- > (CH3)2NH > CH3NH2
B. (CH3)2NH > NH2^- > CH3NH2
C. NH2^- > CH3NH2 > (CH3)2NH
D. All have equal basicity
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Correct: A
Amide ion (NH2^-) is strongest base in non-aqueous solvents like liquid NH3. Aliphatic amines (especially tertiary) have higher basicity than ammonia.