Consider a buffer solution containing CH₃COO^-Na⁺ and CH₃COOH.If you add hydronium (H₃O⁺)until all of the CH₃COO^- is converted into CH₃COOH and then add a little more hydronium, what do you expect to observe? A) The pH increases. B) The pH decreases. C) The pH stays the same. D) The solution will be neutralized. E) The pH changes, but it is not possible to determine how it will change.

Question

Quizplus · Accepted Answer

Adding hydronium ions (H3O+) to the buffer solution will initially convert CH3COO- (acetate ion) into CH3COOH (acetic acid), maintaining the pH relatively stable due to the buffer action. However, once all acetate ions are converted and additional hydronium ions are added, the pH will decrease because the solution becomes more acidic with the addition of extra H3O+ ions beyond the buffer capacity.

Consider a Buffer Solution Containing CH3COO-Na+ and CH3COOH

Consider a Buffer Solution Containing CH₃COO^-Na⁺ and CH₃COOH