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  4. In chlorobenzene solution, the basic strength of amines increases in the order

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Q. In chlorobenzene solution, the basic strength of amines increases in the order

Bihar CECEBihar CECE 2010Aldehydes Ketones and Carboxylic Acids

Solution:

Chlorobenzene is a non-polar solvent, thus amines follow their general trend of basicity, ie, as the number of alkyl groups increases, availability of lone pair for donation decreases, and thus basicity increases.
$\therefore $ The order of basic strength is
$C_{2} H_{5} N H_{2} < \left(C_{2} H_{5}\right) N H < \left(C_{2} H_{5}\right)_{3} N $