The relationship between pH and pOH can be summed up by which of the following equations?

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Enhance your knowledge and skills for the UCF CHM2046 Chemistry Fundamentals II Test 3. Dive into multiple choice questions with explanations and get confident for success in your exam!

The relationship between pH and pOH is defined by the equation pH + pOH = 14. This equation arises from the concept of the ion product of water, which at room temperature (25°C) is constant at 1.0 x 10^-14.

In aqueous solutions, the concentration of hydrogen ions [H⁺] and hydroxide ions [OH⁻] are inversely related; as the concentration of one increases, the concentration of the other decreases. The pH scale measures the concentration of hydrogen ions, while pOH measures the concentration of hydroxide ions. The sum of pH and pOH is always equal to 14 at 25°C, which is a fundamental property of water.

This understanding is crucial in various applications, such as predicting the behavior of acids and bases in solution or calculating changes in acidity as a result of adding substances to a solution.