COMEDK · Chemistry · 29. Amines

Which one of the following shows the correct increasing order of basic nature of the given compounds?
A: Phenylmethanamine
B: N-Ethylethanamine
C:N, N-Dimethylaniline
D : N, N-Dimethylmethanamine

A A < D < B < C
B C < A < D < B
C \(\mathrm{B}<\mathrm{C}<\mathrm{A}<\mathrm{D}\)
D D < B < A < C

Verified Solution

Answer & Solution

Correct Answer

(B) C < A < D < B

Step-by-step Solution

Detailed explanation

The basicity of amines depends on the availability of the lone pair on the nitrogen atom. Electron-donating groups increase basicity, while electron-withdrawing groups or resonance delocalization decrease it. Compound A is Phenylmethanamine (\(C_{6}H_{5}CH_{2}NH_{2}\)), a…

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

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Which one of the following shows the correct increasing order of basic nature of the given compounds?A: PhenylmethanamineB: N-EthylethanamineC:N, N-DimethylanilineD : N, N-Dimethylmethanamine

Step-by-step Solution

Which one of the following shows the correct increasing order of basic nature of the given compounds?
A: Phenylmethanamine
B: N-Ethylethanamine
C:N, N-Dimethylaniline
D : N, N-Dimethylmethanamine