NEET Solved Paper 2019 Question 22

Question: The correct order of the basic strength of methyl substituted amines in aqueous solution is- [NEET 5-5-2019]

Options:

A) $ {{(CH _3)}_3}N.{{\text{(}CH _3\text{)}}_2}NH>CH _3NH _2 $

B) $ CH _3NH _2>{{\text{(}CH _3\text{)}}_2}NH>{{\text{(}CH _3\text{)}}_3}N $

C) $ {{(CH _3)}_2}NH>CH _3NH _2>{{\text{(}CH _3\text{)}}_3}N $

D) $ {{(CH _3)}_3}N>CH _3NH _2>{{\text{(}CH _3\text{)}}_2}NH $

Show Answer

Answer:

Correct Answer: C

Solution:

$ {{(CH _3)}_2}NH>CH _3NH _2>{{\text{(}CH _3\text{)}}_3}N $

In aqueous sol Reayon $ \to $ (i) Hychogen Bonding (ii) Stenic factor