The correct order of basic nature in aqueous solution for the bases and is: [2025]

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Q.
The correct order of basic nature in aqueous solution for the bases

${NH}_{3}, H_{2} N - {NH}_{2}, {CH}_{3} {CH}_{2} {NH}_{2}, {({CH}_{3} {CH}_{2})}_{2} NH$ and ${({CH}_{3} {CH}_{2})}_{3} N$ is: [2025]

Solution

Q.
The correct order of basic nature in aqueous solution for the bases

${NH}_{3}, H_{2} N - {NH}_{2}, {CH}_{3} {CH}_{2} {NH}_{2}, {({CH}_{3} {CH}_{2})}_{2} NH$ and ${({CH}_{3} {CH}_{2})}_{3} N$ is: [2025]

1 ${NH}_{3} < H_{2} N - {NH}_{2} < {({CH}_{3} {CH}_{2})}_{3} N < {CH}_{3} {CH}_{2} {NH}_{2} < {({CH}_{3} {CH}_{2})}_{2} NH$

2 ${NH}_{3} < H_{2} N - {NH}_{2} < {CH}_{3} {CH}_{2} {NH}_{2} < {({CH}_{3} {CH}_{2})}_{2} NH < {({CH}_{3} {CH}_{2})}_{3} N$

3 $H_{2} N - {NH}_{2} < {NH}_{3} < {({CH}_{3} {CH}_{2})}_{3} N < {CH}_{3} {CH}_{2} {NH}_{2} < {({CH}_{3} {CH}_{2})}_{2} NH$

4 ${NH}_{2} - {NH}_{2} < {NH}_{3} < {CH}_{3} {CH}_{2} {NH}_{2} < {({CH}_{3} {CH}_{2})}_{3} N < {({CH}_{3} {CH}_{2})}_{2} NH$

Ans.
(4)

For ethyl substituted amines, order of basicity in aqueous solution is: 2° > 3° > 1° > ${NH}_{3}$ .

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Solution

Q. The correct order of basic nature in aqueous solution for the bases NH3,H2N-NH2,CH3CH2NH2,(CH3CH2)2NH and (CH3CH2)3N is: [2025]

1 NH3<H2N-NH2<(CH3CH2)3N<CH3CH2NH2<(CH3CH2)2NH

2 NH3<H2N-NH2<CH3CH2NH2<(CH3CH2)2NH<(CH3CH2)3N

3 H2N-NH2<NH3<(CH3CH2)3N<CH3CH2NH2<(CH3CH2)2NH

4 NH2-NH2<NH3<CH3CH2NH2<(CH3CH2)3N<(CH3CH2)2NH

Ans. (4) For ethyl substituted amines, order of basicity in aqueous solution is: 2° > 3° > 1° > NH3.

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Q.
The correct order of basic nature in aqueous solution for the bases

${NH}_{3}, H_{2} N - {NH}_{2}, {CH}_{3} {CH}_{2} {NH}_{2}, {({CH}_{3} {CH}_{2})}_{2} NH$ and ${({CH}_{3} {CH}_{2})}_{3} N$ is: [2025]

1 ${NH}_{3} < H_{2} N - {NH}_{2} < {({CH}_{3} {CH}_{2})}_{3} N < {CH}_{3} {CH}_{2} {NH}_{2} < {({CH}_{3} {CH}_{2})}_{2} NH$

2 ${NH}_{3} < H_{2} N - {NH}_{2} < {CH}_{3} {CH}_{2} {NH}_{2} < {({CH}_{3} {CH}_{2})}_{2} NH < {({CH}_{3} {CH}_{2})}_{3} N$

3 $H_{2} N - {NH}_{2} < {NH}_{3} < {({CH}_{3} {CH}_{2})}_{3} N < {CH}_{3} {CH}_{2} {NH}_{2} < {({CH}_{3} {CH}_{2})}_{2} NH$

4 ${NH}_{2} - {NH}_{2} < {NH}_{3} < {CH}_{3} {CH}_{2} {NH}_{2} < {({CH}_{3} {CH}_{2})}_{3} N < {({CH}_{3} {CH}_{2})}_{2} NH$

Ans.
(4)

For ethyl substituted amines, order of basicity in aqueous solution is: 2° > 3° > 1° > ${NH}_{3}$ .