In the equilibrium of acetic acid explain what will happen to the pH of the solution when sodium acetate(CH3COONa) is added to the solution?

CH₃COOH(aq) + H₂O(l) ⇌ CH₃COO⁻(aq) + H₃O⁺

When CH₃COONa dissolves in water, the concentration of CH₃COO⁻ ions increases. According to Le Chatelier's principle, this equilibrium position will shift to the left and the concentration of H₃O⁺ ions will then decrease. The lower the concentration of H₃O⁺ ions, the higher the pH is. Hence, the pH of the solution increases.