Buffer Solution & Buffer Action

buffer solution and buffer action 2022
Buffer solution

A buffer solution is defined as the solution which change the Power of hydrogen (PH) value of the solution, even on adding a small amount of acid or base to the solution.

Generally, the PH value solution changes with a change in concentration of hydrogen ion or Hydroxide ion in the solution. That is adding acid or base to the solution. but there are soft solutions whose pH does not change even on adding some amount of base to that solution. such a solution is called a buffer solution. The solution which

Types of Buffer solution

Buffer solution are two types on the basis of its properties,these are

1)Acidic Buffer solution

2)Basic Buffer solution

1) Acidic Buffer Solution

A buffer solution prepared from a weak acid and its salt with a strong base is called an acidic buffer solution. example of a solution prepared by using CH3-COOH and CH3-COONa.

2) Basic Buffer Solution

A buffer solution prepared from a weak base and its salt with a strong acid is called a basic buffer solution. for example, a solution prepared by using an NH4OH and NH4Cl.

Buffer Action/Buffer Mechanism

Let us consider an acidic Buffer solution prepared from CH3COOH and CH3COONa.CH3COOH is a weak acid and ionized partially while CH3COONa is the salt and ionized completely as follows.

CH3COOH <========> CH3COO^- + H^+

CH3COONa ———-> CH3COO^- + Na^+

Thus the solution contains a high concentration of CH3COO- undissociated CH3COOH, with very few concentrations of hydrogen ions and sodium ions.

What is Buffer solution?

The solution which resists change in the Power of hydrogen (PH) value of the solution, even on adding a small percentage of acid or base to the solution is called Buffer solution.

What is acidic Buffer solution?

A buffer solution prepared from weak acids and its salt with a strong base is called an acidic buffer solution.

What is Basic buffer solution

A buffer solution prepared from a weak base and its salt with a strong acid is called a basic buffer solution.

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