Which of the following is the correct hydronium ion ,H₃O⁺,concentration of 0.0013 M KOH(aq)at 25 °C? (K_w = 1.01 × 10^-14) A) 7.7 × 10^-12 M B) 1.3 × 10^-3 M C) 1.0 × 10^-14 M D) 1.0 × 10^-7 M E) 1.3 × 10^-17 M

Question

Quizplus · Accepted Answer

The hydronium ion concentration in a solution of 0.0013 M KOH can be found using the water dissociation constant (Kw = 1.01 × 10^-14 at 25 °C). Since KOH is a strong base, it fully dissociates in water. The concentration of OH^- ions is equal to the concentration of KOH, which is 0.0013 M. The product of the concentrations of H3O+ and OH^- ions in water at 25 °C is always equal to Kw. Therefore, [H3O+] = Kw / [OH^-] = (1.01 × 10^-14) / (0.0013) = 7.7 × 10^-12 M.

Which of the Following Is the Correct Hydronium Ion ,H3O+,concentration

Which of the Following Is the Correct Hydronium Ion ,H₃O⁺,concentration