Question

Dissociation of CH3COOH is supressed by adding

1.HNO3. 2.CH3COONa
3.HCLO4. 4. any of the above

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Answer 1

2 .CH3COONa is the answer ......

Answer 2

Answer:

The dissociation of CH₃COOH is supressed by adding 2.CH₃COONa or Sodium Acetate.

Explanation:

• Dissociation of CH₃COOH can be written as: -

            CH₃COOH ⇔ CH₃COO⁻ + H⁺

• According to Le Chatelier's principle, if the concentration of the reactant species is increased, the equilibrium will shift in the direction  that reduces the concentration of that species and vice versa. The addition of product shall increase the backward reaction.

• Thus here if CH₃COONa is added to the reaction, it will provide acetate ions ( CH₃COO⁻) , thereby shifting the reaction's equilibrium to left or backwards.

• This will supress the dissociation of acetic acid