Definition of Buffers
They are temporary memory storage areas that hold data while it is being transferred between two locations or processes.
-
Buffer Solution:
- A system that minimizes changes in pH when small amounts of acid or base are added.
-
Components:
- Weak Acid and its Conjugate Base (e.g., acetic acid and sodium acetate).
- Weak Base and its Conjugate Acid (e.g., ammonia and ammonium chloride).
Advertisements
Mechanism of Buffer Action
-
Acidic Buffers:
- Addition of Acid (H⁺): The conjugate base (A⁻) reacts with H⁺ to form the weak acid (HA), minimizing pH change.
-
${A^- + H^+ -> HA}$
- Addition of Base (OH⁻): The weak acid (HA) donates H⁺ to form water and the conjugate base (A⁻).
- ${HA + OH^- -> A^- + H2O}$
Basic Buffers:
- Similar reactions occur with a weak base and its conjugate acid.
Advertisements
Advertisements
Thank you for reading from Firsthope's notes, don't forget to check YouTube videos!
