Recently Added Formulas in Chemistry

· Hydrolysis
· Ionization
· pH scale
· Acid-base Reaction
· Strength of Acid and bases

Additional Formulas

· Acid and Base
· Bronsted/Lowry theory
· Strength of Acid and bases
· Acid-base Reaction
· pH scale
· Buffers
· Ionization
· Hydrolysis

Current Location > Formulas in Chemistry > Acid and Bases > Buffers

Buffers

The solution that resists the change in pH when small quantities of acid or alkali are added to it, is called as buffer. Buffer is a mixture of either weak acid and its salt or weak base and its salt.

Types of buffer solution:

1. Acidic buffer solution
Souliton containing misture of weak acid and its salt is called as acidic buffer soution like acetic acid and sodium acetate

2. Basic buffer solution
Souliton containing misture of weak base and its salt is called as basic buffer soution like ammonium hydroxide and ammonium chloride

Properties of Buffer solution:

The pH remains constant
The pH of soultion does not change on dilution
The pH remains constant on keeping for long time.
The pH does not change even after addition of small quantities of acid or base.

Buffer capacity:

The amount of acid or base that must be added to the buffer solution to produce unit change of pH is called as buffer capacity (ß). Buffer capacity has a positive value.