The most basic amine among the following is

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The most basic amine among the following is

Options

(a) p-toluidine
(b) o-nitroaniline
(c) p-nitroaniline
(d) 2,4-dinitroaniline

Correct Answer:

p-toluidine

Explanation:

Basicity of amines increases with the presence of electron releasing groups and decreases with the presence of electron withdrawing group. Among the give options, only p-toluidine has aniline with an electron donating -CH₃ group which, by virtue of its +I-effect, increases the electron density on N-atom and makes electrons more available for protonation. In o-nitroaniline, p-nitroaniline and 2,4-dinitroaniline, due to presence of electron withdrawing -NO₂ group, the electron density on N-atom is diminished. Thus, it is less basic. Similarly for p-fluoroaniline.

Related Questions:

1. Which among the following does not have the hydrogen bond
2. The type of hybridisation of boron in diboron is
3. For azimuthal quantum number l= 3,the maximum number of electrons will be
4. Which of the following statements is not correct for a nucleophile
5. If Avogadro number NA, is charged from 6.022 ˣ 10²³ mol⁻¹ to 6.022 ˣ 10²⁰ mol⁻¹

Topics: Organic compounds containing Nitrogen (87)
Subject: Chemistry (2512)

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