Since, \(+I\) effect and solvation increases basic character while - \(I\) effect and resonance decreases basic chacter. Hence, correct choice is (3)
NCERT Exemplar
CHXII13:AMINES
324107
Assertion : Electron releasing \(-\mathrm{CH}_{3}\) group increases the electron density on nitrogen atom in alkyl amines. Reason : Trimethylamine is more basic than methyl and dimethylamine in aq. solution.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
Steric hindrance from three methyl groups reduces trimethylamine's basicity despite increased electron density on nitrogen. Thus, option (3) is correct.
CHXII13:AMINES
324108
Assertion : Anilinium chloride is more acidic than ammonium chloride. Reason : Anilinium ion is resonance stabilised.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Both Assertion and Reason are incorrect.
Explanation:
Anilinium chloride is more acidic than ammonium chloride because it forms salt with water and liberates amine when treated with strong base. \(\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{NH}_{3}^{+} \mathrm{Cl}^{-}+\mathrm{NaOH} \rightarrow \mathrm{C}_{6} \mathrm{H}_{5} \mathrm{NH}_{2}+\mathrm{H}_{2} \mathrm{O}+\mathrm{NaCl}\) Anilinium ion does not show resonance because charge dispersion at ring may involve pentavalent nitrogen structure. Hence, Assertion is correct and Reason is incorrect.
AIIMS - 2006
CHXII13:AMINES
324109
Tertiary amine is less basic than secondary amine because of
1 inductive effect
2 peroxide effect
3 steric effect
4 resonance effect.
Explanation:
In aqueous solvent, tertiary amine is less basic than secondary amine due to steric factor.
Since, \(+I\) effect and solvation increases basic character while - \(I\) effect and resonance decreases basic chacter. Hence, correct choice is (3)
NCERT Exemplar
CHXII13:AMINES
324107
Assertion : Electron releasing \(-\mathrm{CH}_{3}\) group increases the electron density on nitrogen atom in alkyl amines. Reason : Trimethylamine is more basic than methyl and dimethylamine in aq. solution.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
Steric hindrance from three methyl groups reduces trimethylamine's basicity despite increased electron density on nitrogen. Thus, option (3) is correct.
CHXII13:AMINES
324108
Assertion : Anilinium chloride is more acidic than ammonium chloride. Reason : Anilinium ion is resonance stabilised.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Both Assertion and Reason are incorrect.
Explanation:
Anilinium chloride is more acidic than ammonium chloride because it forms salt with water and liberates amine when treated with strong base. \(\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{NH}_{3}^{+} \mathrm{Cl}^{-}+\mathrm{NaOH} \rightarrow \mathrm{C}_{6} \mathrm{H}_{5} \mathrm{NH}_{2}+\mathrm{H}_{2} \mathrm{O}+\mathrm{NaCl}\) Anilinium ion does not show resonance because charge dispersion at ring may involve pentavalent nitrogen structure. Hence, Assertion is correct and Reason is incorrect.
AIIMS - 2006
CHXII13:AMINES
324109
Tertiary amine is less basic than secondary amine because of
1 inductive effect
2 peroxide effect
3 steric effect
4 resonance effect.
Explanation:
In aqueous solvent, tertiary amine is less basic than secondary amine due to steric factor.
Since, \(+I\) effect and solvation increases basic character while - \(I\) effect and resonance decreases basic chacter. Hence, correct choice is (3)
NCERT Exemplar
CHXII13:AMINES
324107
Assertion : Electron releasing \(-\mathrm{CH}_{3}\) group increases the electron density on nitrogen atom in alkyl amines. Reason : Trimethylamine is more basic than methyl and dimethylamine in aq. solution.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
Steric hindrance from three methyl groups reduces trimethylamine's basicity despite increased electron density on nitrogen. Thus, option (3) is correct.
CHXII13:AMINES
324108
Assertion : Anilinium chloride is more acidic than ammonium chloride. Reason : Anilinium ion is resonance stabilised.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Both Assertion and Reason are incorrect.
Explanation:
Anilinium chloride is more acidic than ammonium chloride because it forms salt with water and liberates amine when treated with strong base. \(\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{NH}_{3}^{+} \mathrm{Cl}^{-}+\mathrm{NaOH} \rightarrow \mathrm{C}_{6} \mathrm{H}_{5} \mathrm{NH}_{2}+\mathrm{H}_{2} \mathrm{O}+\mathrm{NaCl}\) Anilinium ion does not show resonance because charge dispersion at ring may involve pentavalent nitrogen structure. Hence, Assertion is correct and Reason is incorrect.
AIIMS - 2006
CHXII13:AMINES
324109
Tertiary amine is less basic than secondary amine because of
1 inductive effect
2 peroxide effect
3 steric effect
4 resonance effect.
Explanation:
In aqueous solvent, tertiary amine is less basic than secondary amine due to steric factor.
Since, \(+I\) effect and solvation increases basic character while - \(I\) effect and resonance decreases basic chacter. Hence, correct choice is (3)
NCERT Exemplar
CHXII13:AMINES
324107
Assertion : Electron releasing \(-\mathrm{CH}_{3}\) group increases the electron density on nitrogen atom in alkyl amines. Reason : Trimethylamine is more basic than methyl and dimethylamine in aq. solution.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
Steric hindrance from three methyl groups reduces trimethylamine's basicity despite increased electron density on nitrogen. Thus, option (3) is correct.
CHXII13:AMINES
324108
Assertion : Anilinium chloride is more acidic than ammonium chloride. Reason : Anilinium ion is resonance stabilised.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Both Assertion and Reason are incorrect.
Explanation:
Anilinium chloride is more acidic than ammonium chloride because it forms salt with water and liberates amine when treated with strong base. \(\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{NH}_{3}^{+} \mathrm{Cl}^{-}+\mathrm{NaOH} \rightarrow \mathrm{C}_{6} \mathrm{H}_{5} \mathrm{NH}_{2}+\mathrm{H}_{2} \mathrm{O}+\mathrm{NaCl}\) Anilinium ion does not show resonance because charge dispersion at ring may involve pentavalent nitrogen structure. Hence, Assertion is correct and Reason is incorrect.
AIIMS - 2006
CHXII13:AMINES
324109
Tertiary amine is less basic than secondary amine because of
1 inductive effect
2 peroxide effect
3 steric effect
4 resonance effect.
Explanation:
In aqueous solvent, tertiary amine is less basic than secondary amine due to steric factor.
