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  • How to solve this problem- Which one of the following is the strongest base in aqueous solution?

Which one of the following is the strongest base in aqueous solution?

  • Option 1)

    Methylamine

  • Option 2)

    Trimethylamine

  • Option 3)

    Aniline

  • Option 4)

    Dimethylamine

 

Answers (2)

best_answer

 

As we learnt in

Comparision of Basic nature in aliphatic amines in aqueous phase. -

The basic strength of an amine in aqueous medium is determined not only on the basic of +I effect of the alkyl groups attached to the nitrogen atom but also the solvation of alkyl ammonium ion formed by uptake of proton.


The solvation of alkyl ammonium ion follows the above order. Both the  +I  effect and solvation of amine make basic order of aniline in aqueous medium as

2\degree>1\degree>3\degree>NH_{3}

- wherein

 

 

General order of basicity -

Aliphatic Amines > Ammonia > Aromatic Amines

-

 

 In aqueous solution the order of basic strength is -

\left ( CH_{3} \right )_2NH> CH_{3}-NH_{2}> \left ( CH_{3} \right )_3N> C_{6}H_{5}-NH_{2}


Option 1)

Methylamine

Incorrect

Option 2)

Trimethylamine

Incorrect

Option 3)

Aniline

Incorrect

Option 4)

Dimethylamine

Correct

Posted by

divya.saini

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