CameraIcon
CameraIcon
SearchIcon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

How does a mixture of CH3COOH and CH3COONa act as a buffer when a small amount of NaOH is added?


Open in App
Solution

Buffer solution:

  • An aqueous solution consisting of a mixture of a weak acid and its conjugate base, or vice versa is known as a buffer solution.
  • Its pH changes very little when a small amount of strong acid or base is added to it.
  • A mixture of a weak acid and its salt with a strong base serves as an acidic buffer.
  • CH3COOH(aq)Aceticacid+H2O(l)WaterCH3COO(aq)Acetateion+H3O+(aq)Hydroniumion
  • CH3COOH is a weak acid, while CH3COO is a weak base.
  • On adding NaOH to the system: CH3COOH(aq)Aceticacid+NaOH(aq)SodiumhydroxideCH3COO(aq)Acetateion+H2O(l)Water+Na+(aq)Sodiumion

Since some of the acetic acids react with the OH from the base and convert it to water, the pH will not change as drastically.


flag
Suggest Corrections
thumbs-up
6
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Buffer Solutions
CHEMISTRY
Watch in App
Join BYJU'S Learning Program
CrossIcon