Calculate the pH of a solution that contains 7.8 × 10^-6 mol L^-1 OH^- at 25 °C. A)1.28 B)5.11 C)12.72 D)8.89 E)9.64

Name: Calculate the pH of a solution that contains 7.8 × 10 -6 mol L -1 OH - at 25 °C. A)1.28 B)5.11 C)12.72 D)8.89 E)9.64
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Quizplus · Accepted Answer

To find the pH, first calculate the pOH using the concentration of OH⁻: pOH = -log(7.8 × 10⁻⁶) ≈ 5.11. Then, use the relation pH + pOH = 14 to find the pH: pH = 14 - 5.11 = 8.89.

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