The correct  order of basic strength of methyl substituted amines in an aqueous solution is:

  • Option 1)

    (CH_3)_2NH > CH_3NH > (CH_3)_3NH

  • Option 2)

    (CH_3)_3NH > CH_3NH > (CH_3)_2NH

  • Option 3)

    (CH_3)_3NH > (CH_3)_2NH > CH_3NH

  • Option 4)

    CH_3NH > (CH_3)_2NH > (CH_3)_3NH

Answers (1)

Option 1

In aqueous solution the order of basicity changes

(CH_3)_2NH > CH_3NH > (CH_3)_3NH

Amines in water solution exist as ammonium ions. Due to H-bonding 1o amine and 2o amine are more basic than 3o amine.


Option 1)

(CH_3)_2NH > CH_3NH > (CH_3)_3NH

Option 2)

(CH_3)_3NH > CH_3NH > (CH_3)_2NH

Option 3)

(CH_3)_3NH > (CH_3)_2NH > CH_3NH

Option 4)

CH_3NH > (CH_3)_2NH > (CH_3)_3NH

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