Question

Consider the following statements:
Statement-I: CH$_3$NH$_2$ is more basic than NH$_3$, but C$_6$H$_5$NH$_2$ is less basic than NH$_3$.
Statement-II: The order of basic strength of amines in aqueous phase follows
(C$_2$H$_5$)$_2$NH > C$_2$H$_5$NH$_2$ > C$_6$H$_5$NH$_2$

• A. Both statement-I and statement-II are correct
• B. Both statement-I and statement-II are not correct
• C. Statement-I is correct, but statement-II is not correct
• D. Statement-I is not correct, but statement-II is correct

Hint:

In aqueous phase, basicity depends on inductive effect and solvation, not just alkyl substitution.

Answer 1

The Correct Option is C

Statement-I is correct: CH$_3$NH$_2$ is more basic than NH$_3$ (due to +I effect), while C$_6$H$_5$NH$_2$ is less basic due to resonance.
However, in aqueous medium, basicity does not follow the order given in II due to solvation effects; hence Statement-II is incorrect.