Acid-base indicators change color ________

Question

Quizplus · Accepted Answer

Acid-base indicators usually change color over a range of 1 or 2 pH units, as they are designed to provide a visible transition between acidic and basic solutions. The exact pH at which the change occurs depends on the specific indicator used. None of the other options given are correct, as indicator color changes do not necessarily occur at pH 7, between a pH of 6 and 8, or at the midpoint of a titration (although this can be a useful way to determine the endpoint of a titration). The pH at which an indicator changes color is related to its pKa value, which is the pH at which equal amounts of the acidic and basic forms of the indicator are present in solution.

Acid-Base Indicators Change Color ________