The correct order of increasing basic nature for the bases NH3 , CH3 NH2 and (CH3)2NH in aqueous solutions aqueous solutions

Question

The correct order of increasing basic nature for the bases NH3 , CH3 NH2 and (CH3)2NH in aqueous solutions aqueous solutions (A)  CH3 NH2 < NH3 < (CH3)2 NH (B) (CH3)2NH < NH3 < CH3 NH2 (C) NH3 < CH3NH2 < (CH3)2 NH  (D) CH3 NH2 < (CH3)2 NH < NH3

Tardigrade Admin · Accepted Answer

If the alkyl group is bigger than CH 3 group, there is steric hindrance to H-bonding and hence +I effect predominates over H-bonding. 2>3>1. There is an important role of the inductive effect, solvation effect and steric hindrane of alkyl group. Which decide the basic strength of alkyl amine in the aqueous state. (CH3)2NH > CH3NH2 > NH3

Q. The correct order of increasing basic nature for the bases $N H_{3}, C H_{3} N H_{2}$ and $(C H_{3})_{2} N H$ in aqueous solutions aqueous solutions

$C H_{3} N H_{2} < N H_{3} < (C H_{3})_{2} N H$

$(C H_{3})_{2} N H < N H_{3} < C H_{3} N H_{2}$

$N H_{3} < C H_{3} N H_{2} < (C H_{3})_{2} N H$

$C H_{3} N H_{2} < (C H_{3})_{2} N H < N H_{3}$

Q. The correct order of increasing basic nature for the bases NH3​,CH3​NH2​ and (CH3​)2​NH in aqueous solutions aqueous solutions

CH3​NH2​<NH3​<(CH3​)2​NH

(CH3​)2​NH<NH3​<CH3​NH2​

NH3​<CH3​NH2​<(CH3​)2​NH

CH3​NH2​<(CH3​)2​NH<NH3​

Q. The correct order of increasing basic nature for the bases $N H_{3}, C H_{3} N H_{2}$ and $(C H_{3})_{2} N H$ in aqueous solutions aqueous solutions

$C H_{3} N H_{2} < N H_{3} < (C H_{3})_{2} N H$

$(C H_{3})_{2} N H < N H_{3} < C H_{3} N H_{2}$

$N H_{3} < C H_{3} N H_{2} < (C H_{3})_{2} N H$

$C H_{3} N H_{2} < (C H_{3})_{2} N H < N H_{3}$