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 will increase the concentration of H+ ions in the solution, leading to a decrease in pH. Once all of the buffer is converted to CH₃COOH, the solution is no longer a buffer and any further addition of hydronium will further increase the concentration of H+ ions and decrease the pH of the solution.

Consider a Buffer Solution Containing CH3COO - Na+ and CH3COOH

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