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Question : 7
Total: 30
Arrange the following in increasing order of their basic strength in aqueous solution:
CH 3 NH 2 , ( CH 3 ) 3 N , ( CH 3 ) 2 NH
Solution:
Primary amine is more basic due to presence of two hydrogen bonds which have intermolecular association between two hydrogen and one nitrogen atom. Secondary amine is more basic than tertiary amine in aqueous solution because of steric factor. So, order of basicity is:
CH 3 − NH 2 > ( CH 3 ) 2 − NH > ( CH 3 ) 3 − N
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