Question

How aqueous solution of CH3COONa can act as a buffer solution

Answer 1

Answer:

A buffer is made with sodium acetate (CH3COONa) and acetic acid (CH3COOH); the Ka for acetic acid is 1.80 x 10-5. The pH of the buffer is 3.98.

Explanation:

Buffer solution is a mixture of weak acid and its salt of strong base or weak base and its salt of strong acid. ∴ They can act as buffer.

this may be the answer to your question.

Answer 2

Answer:

An aqueous solution of CH₃COONa (Sodium Acetate) and CH₃COOH (Acetic Acid/Ethanoic Acid)) acts as a Buffer solution in the presence of small amount of NaOH (Sodium hydroxide/Caustic Soda).

Explanation:

Buffer Solution - Buffer Solution is basically a water based solution in which water acts as solvent and it consists of a mixture of a weak acid and the corresponding conjugate base of a weak base, or it can be a weak base and the conjugate acid of the weak base.

Sodium Acetate (CH₃COONa) and Acetic Acid (CH₃COOH) both are weak base and weak acid. Therefore, they form a buffer solution.