My Learning Cart
?
Categories
Account

Which of the following compounds is least acidic due to +M effect?

₹0.0
Login to Download
  • 📥 Instant PDF Download
  • ♾ Lifetime Access
  • 🛡 Secure & Original Content

What’s inside this PDF?

Question: Which of the following compounds is least acidic due to +M effect?

Options:

  1. Phenol
  2. Acetic acid
  3. Formic acid
  4. Benzoic acid

Correct Answer: Phenol

Solution: 

Phenol is less acidic compared to the other acids listed due to the +M effect of the aromatic ring, which destabilizes the negative charge on the phenoxide ion.

Which of the following compounds is least acidic due to +M effect?

Practice Questions

Q1
Which of the following compounds is least acidic due to +M effect?
  1. Phenol
  2. Acetic acid
  3. Formic acid
  4. Benzoic acid

Questions & Step-by-Step Solutions

Which of the following compounds is least acidic due to +M effect?
  • Step 1: Understand what acidity means. Acidity refers to how easily a compound can donate a proton (H+).
  • Step 2: Identify the compounds being compared. In this case, we are looking at phenol and other acids.
  • Step 3: Learn about the +M effect. The +M effect (positive mesomeric effect) occurs when an electron-donating group (like an aromatic ring) stabilizes a negative charge.
  • Step 4: Recognize that phenol has an aromatic ring. This ring can donate electrons, which affects the stability of the phenoxide ion (the ion formed when phenol loses a proton).
  • Step 5: Compare the stability of the phenoxide ion to other acids. The +M effect from the aromatic ring makes the negative charge on the phenoxide ion less stable.
  • Step 6: Conclude that because the negative charge is destabilized by the +M effect, phenol is less acidic than the other acids listed.
No concepts available.
Soulshift Feedback ×

On a scale of 0–10, how likely are you to recommend The Soulshift Academy?

Not likely Very likely
Home Practice Performance eBooks