Acid-base indicators change color ________

Question

Quizplus · Accepted Answer

Acid-base indicators undergo a color change over a range of pH values, typically around 1 or 2 units, making B the correct choice. Choice A is incorrect because indicators change color over a range of pH values, not just at a specific pH value. Choice C is incorrect because not all indicators change color at a pH of 7; this is only true for certain indicators, such as neutral litmus. Choice D is incorrect because the color change range of indicators can vary and may not always occur between pH 6 and 8. Finally, choice E is incorrect because the midpoint of a titration is the point at which the indicator changes color, not necessarily the point at which it first begins to change color.

Acid-Base Indicators Change Color ________