Question

The sequence of basic strength of alkyl amines follows the order:

• A. RNH\(_2\)>R\(_2\)NH>R\(_3\)N
• B. RNH\(_2\)>R\(_3\)N>R\(_2\)NH
• C. R\(_2\)NH>RNH\(_2\)>R\(_3\)N
• D. R\(_3\)N>RNH\(_2\)>R\(_2\)NH

Hint:

The basic strength of amines increases with fewer alkyl groups because they have less electron-donating effects on nitrogen.

Answer 1

The Correct Option is A

Step 1: Basic strength of alkyl amines. The basic strength of alkyl amines decreases as the number of alkyl groups increases because alkyl groups are electron-donating and increase the electron density on nitrogen. More alkyl groups make the nitrogen less available to accept protons.
Step 2: Conclusion. Thus, the basic strength order is RNH\(_2\)>R\(_2\)NH>R\(_3\)N.