Calculate the hydronium ion concentration in an aqueous solution with a pOH of 4.33 at 25°C. A) 2.1 × 10^-10 M B) 9.7 × 10^-10M C) 4.7 × 10^-5 M D) 3.8 × 10^-5 M E) 6.3 × 10^-6 M

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Quizplus · Accepted Answer

The pOH of a solution is a measure of its basicity. The lower the pOH, the more acidic the solution. The pH and pOH of a solution are related by the equation:```pH + pOH = 14```In this case, the pOH is 4.33, so the pH is:```pH = 14 - pOH = 14 - 4.33 = 9.67```The hydronium ion concentration is related to the pH by the equation:```[H3O+] = 10^-pH```So, the hydronium ion concentration in this solution is:```[H3O+] = 10^-pH = 10^-9.67 = 2.1 × 10^-10 M```Therefore, the correct answer is A) 2.1 × 10^-10 M.

Calculate the Hydronium Ion Concentration in an Aqueous Solution with a POH