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What is the effect of the -I group on acidity?

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Question: What is the effect of the -I group on acidity?

Options:

  1. Increases acidity
  2. Decreases acidity
  3. No effect on acidity
  4. Depends on the solvent

Correct Answer: Increases acidity

Solution: 

Electron-withdrawing groups (-I) increase the acidity of compounds by stabilizing the negative charge on the conjugate base.

What is the effect of the -I group on acidity?

Practice Questions

Q1
What is the effect of the -I group on acidity?
  1. Increases acidity
  2. Decreases acidity
  3. No effect on acidity
  4. Depends on the solvent

Questions & Step-by-Step Solutions

What is the effect of the -I group on acidity?
  • Step 1: Understand what acidity means. Acidity refers to how easily a substance can donate a proton (H+).
  • Step 2: Learn about conjugate bases. When an acid donates a proton, it becomes a conjugate base.
  • Step 3: Know what an electron-withdrawing group (-I) is. These are groups that pull electrons away from other parts of the molecule.
  • Step 4: Realize that when a -I group is present, it helps stabilize the negative charge on the conjugate base.
  • Step 5: Understand that a more stable conjugate base means the original acid can donate its proton more easily.
  • Step 6: Conclude that -I groups increase the acidity of compounds because they stabilize the conjugate base.
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