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Which of the following alcohols is most acidic?

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Question: Which of the following alcohols is most acidic?

Options:

  1. Methanol
  2. Ethanol
  3. Isopropanol
  4. Tert-butanol

Correct Answer: Methanol

Solution: 

Methanol is the most acidic among the given alcohols due to the absence of steric hindrance.

Which of the following alcohols is most acidic?

Practice Questions

Q1
Which of the following alcohols is most acidic?
  1. Methanol
  2. Ethanol
  3. Isopropanol
  4. Tert-butanol

Questions & Step-by-Step Solutions

Which of the following alcohols is most acidic?
Correct Answer: Methanol
  • Step 1: Understand what acidity means in the context of alcohols. Acidity refers to how easily an alcohol can donate a proton (H+).
  • Step 2: Identify the alcohols being compared. Common alcohols include methanol, ethanol, and others.
  • Step 3: Recognize that steric hindrance refers to the crowding around a reactive site, which can affect how easily a proton can be donated.
  • Step 4: Compare the structures of the alcohols. Methanol (CH3OH) has a simple structure with no bulky groups around the hydroxyl (-OH) group.
  • Step 5: Note that alcohols with more bulky groups (like tert-butanol) have more steric hindrance, making it harder for them to donate a proton.
  • Step 6: Conclude that methanol, having no steric hindrance, can donate a proton more easily than the other alcohols, making it the most acidic.
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