Amines Question 4
Question 4 - 25 January - Shift 1
The correct order in aqueous medium of basic strength in case of methyl substituted amines is :
(1) $Me_2 NH>MeNH_2>Me_3 N>NH_3$
(2) $Me_2 NH>Me_3 N>MeNH_2>NH_3$
(3) $NH_3>Me_3 N>MeNH_2>Me_2 NH$
(4) $Me_3 N>Me_2 NH>MeNH_2>NH_3$
Show Answer
Answer: (1)
Solution:
Formula: Basicity of Amines
In aqueous medium basic strength is dependent on
electron density on nitrogen as well as solvation of cation formed after accepting $H^{+}$. After considering all these factors overall basic strength order is $Me_2 NH>MeNH_2>Me_3 N>NH_3$
