The K_a of phenol is 1.3 * 10^-10.For a solution labeled "1.0 * 10^-3 M aqueous phenol," A)[H₃O⁺] = [H₃O⁺]²/[phenol]_initial. B)[H₃O⁺] [phenol]_initial.

Question

The K_a of phenol is 1.3 * 10^-10.For a solution labeled "1.0 * 10^-3 M aqueous phenol," A)[H₃O⁺] = [H₃O⁺]²/[phenol]_initial. B)[H₃O⁺] << [phenol]_initial. C)[H₃O⁺] > 10^-6. D)pH ~ 4. E)K_w/[H₃O⁺] >> [phenol]_initial.

Quizplus · Accepted Answer

Phenol is a weak acid with a very low K_a value, indicating that it ionizes only slightly in solution. Therefore, the concentration of H₃O⁺ is much less than the initial concentration of phenol.

The Ka of Phenol Is 1

The K_a of Phenol Is 1