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Which of the following amines is the most basic? (2023) 2023

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Question: Which of the following amines is the most basic? (2023) 2023

Options:

  1. Methylamine
  2. Aniline
  3. Ethylamine
  4. Dimethylamine

Correct Answer: Dimethylamine

Exam Year: 2023

Solution: 

Dimethylamine is the most basic due to the electron-donating effect of the two methyl groups, which increases the availability of the lone pair on nitrogen.

Which of the following amines is the most basic? (2023) 2023

Practice Questions

Q1
Which of the following amines is the most basic? (2023) 2023
  1. Methylamine
  2. Aniline
  3. Ethylamine
  4. Dimethylamine

Questions & Step-by-Step Solutions

Which of the following amines is the most basic? (2023) 2023
  • Step 1: Understand what amines are. Amines are compounds that contain a nitrogen atom bonded to hydrogen atoms or carbon groups.
  • Step 2: Know that basicity in amines refers to how well they can accept protons (H+ ions). The more basic an amine is, the more readily it can accept a proton.
  • Step 3: Identify the structure of dimethylamine. Dimethylamine has two methyl groups (CH3) attached to the nitrogen atom.
  • Step 4: Recognize the electron-donating effect of the methyl groups. Methyl groups can donate electron density to the nitrogen atom, making its lone pair of electrons more available to bond with protons.
  • Step 5: Compare dimethylamine with other amines. Other amines may have fewer or no electron-donating groups, making them less basic than dimethylamine.
  • Step 6: Conclude that dimethylamine is the most basic amine because the two methyl groups enhance the nitrogen's ability to accept protons.
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