$H - C O O H > P h - C O O H > C H_{3} - C O O H$ (acidic nature) $C F_{3} - C O O H > C C I_{3} - C O O H > C H_{2} - C O O H$ (Acidic nature) $N - m e t h y l m e t h a n a m i n e > m e t h a n a m i n e > N, N - d i m e t h y l m e t h a n a m i n e$ (Basic nature in aqueous phase) $N, N - d i e t h l e t h a n a m i n e > N - e t h y l e t h a n a m i n e > E t h a n a m i n e$ (Basic nature in aqueous phase)Then the correct order is:

i, i i, i v

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i i, i i i, i v

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i, i i, i i i

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i, i i, i i i, i v

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Solution

The correct option is C $i, i i, i i i$
In aqueous phase, the basicity of amines depends upon:
$(i)$ Inductive effect: which fovours tertiary amine to be more basic due to greater $+ I$ effect of $3$ alkyl group directly attached to nitrogen.
$(i i)$ Solution Effect: Which favours primary amine to be more basic due to greater solution of its cation.
$(i i i)$ Steric Factor: Which cause tertiary amine to be less basic due to steric hinderance .

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Similar questions

(i) H C O O H (i i) P h - C O O H (i i i) P h - O H

(i v) C H_{3} C O O H

C H \equiv C - C O O H; C H_{2} = C H - C O O H; C H_{3} C H_{2} C O O H

C H \equiv C - C O O H; C H_{2} = C H - C O O H; C H_{3} C H_{2} C O O H

K_{a}

C H_{3} - C H_{2} - C O O H

O H C - C H_{2} - C O O H

P h - C H_{2} - C O O H

C_{6} H_{5} C O O H

O - N O_{2} C_{6} H_{4} C O O H

p - N O_{2} C_{6} H_{4} C O O H

m - N O_{2} C_{6} H_{4} C O O H

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