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CBSE Class 12 · 2011 · All India · Compounds Containing NitrogenVery Short Answer

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Rearrange the following in increasing order of their basic strengths: C₆H₅NH₂, C₆H₅N(CH₃)₂, (C₆H₅)₂NH and CH₃NH₂.

Answer: (C₆H₅)₂NH < C₆H₅NH₂ < C₆H₅N(CH₃)₂ < CH₃NH₂.

Solution

Two rings delocalise the lone pair most; N-methyls partially restore density; the pure alkylamine is strongest:

CBSE Class 12 Board · 2011 · All India · Subjective

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