Chapter 9, Problem 9.81AP

Consider the acetic-acid buffer system with acetic acid, CH₃COOH, and its salt sodium acetate, NaCH₃COO:

${\text{CH}}_3\text{COOH}(aq)+{\text{H}}_{\text{2}}\text{O}(l)\rightleftharpoons {\text{H}}_{\text{3}}{\text{O}}^{\text{+}}(aq)+{\text{CH}}_{\text{3}}{\text{COO}}^{\text{-}}(aq)$

1. a. What ia the purpose of a buffer system?
2. b. What is the purpose of NaCH₃COO in the buffer?
3. c. How does the butler react when acid (H₃O⁺) is added?
4. d. How does the buffer react when base (OH⁻) is added?