JEE Main20198 Apr 2019Morning ShiftChemistryAminesActual
In the following compounds, the decreasing order of basic strength will be:
Options
- AC 2 H 5 N H 2 > N H 3 > ( C 2 H 5 ) 2 N H
- B( C 2 H 5 ) N H > N H 3 > C 2 H 5 N H 2
- CN H 3 > C 2 H 5 N H 2 > ( C 2 H 5 ) 2 N H
- D( C 2 H 5 ) 2 N H > C 2 H 5 N H 2 > N H 3
Correct answer
D. ( C 2 H 5 ) 2 N H > C 2 H 5 N H 2 > N H 3
Step-by-step solution
Basic character ∝   + I effect - CH 2 CH 3 exert + I effect so, more the number of - CH 2 CH 3 groups more is the basic character. N H 3 < C H 3 C H 2 N H 2 1 o  Amine < ( C H 3 C H 2 ) 2 N H 2 o  Amine