- Books Name
- Ritan Sheth Chemistry Book
- Publication
- Ritan Sheth
- Course
- CBSE Class 11
- Subject
- Chemistry
BUFFER SOLUTIONS
The solutions which resist charge in pH on dilution or with addition of small amounts of acid or alkali are called buffer solutions.
e.g. CH3COOH + CH3COONa
H2CO3 + HCl
Acidic Buffer: Weak acid and its salt with strong base are known as acidic buffer pH < 7.
e.g CH3COOH and CH3COONa, H2CO3 and HCl
Basic Buffer: Weak base and its salt with strong acid are known as basic buffer. pH > 7
e.g. NH4Cl and NH4OH
- pOH of a basic buffer = pKb + log ([salt]/[acid])
- pH of a basic buffer = pKa – log ([salt]/[acid])