Question

The strongest base in aqueous solution among the following amines is:

• A. C\(_6\)H\(_5\)NH\(_2\) \hspace{0.5cm}
• B. C\(_6\)H\(_5\)NH\(_2\)
• C. C\(_2\)H\(_5\)NH\(_2\) \hspace{1cm}
• D. C\(_6\)H\(_5\)NH\(_2\)

Hint:

The presence of alkyl groups generally increases the basicity of amines due to their electron-donating effect.

Answer 1

The Correct Option is C

Ethanolamine (C\(_2\)H\(_5\)NH\(_2\)) exhibits the highest basicity in water. This is due to the electron-donating nature of its ethyl group (C\(_2\)H\(_5\)), which enhances electron density on the nitrogen atom. In contrast, phenylamine (C\(_6\)H\(_5\)NH\(_2\)) is less basic because its phenyl group withdraws electron density.