In a 1.2 M solution of HClO₄, a strong acid, [H₃O⁺] = ____, and [OH^-] = ____. A) 1.0 × 10^-7 M; 1.0 × 10^-7 M B) 8.3 × 10^-15 M; 1.0 × 10^-14 M C) 8.3 × 10^-15 M; 1.2 M D) 1.2 M; 8.3 × 10^-15 M E) 1.2 M; 1.2 M

Question

Quizplus · Accepted Answer

In a strong acid solution like HClO4 (perchloric acid), the concentration of H+ ions is equal to the initial concentration of the acid because it dissociates completely. Therefore, [H+] = 1.2 M. The concentration of OH- ions can be found using the water dissociation constant (Kw = 1.0 × 10^-14 at 25°C), where [H+][OH-] = Kw. Thus, [OH-] = Kw / [H+] = 1.0 × 10^-14 / 1.2 M = 8.3 × 10^-15 M.

In a 12 M Solution of HClO4, a Strong Acid, [H3O+] =

In a 12 M Solution of HClO₄, a Strong Acid, [H₃O⁺] =