Indicators Flashcards
1
Q
What is an acid-base indicator?
A
An acid-base indicator is a substance that changes colour in response to changes in pH, used to determine the end point of a titration.
2
Q
Give an example of a commonly used acid-base indicator and its colour change range.
A
Phenolpthalein is a commonly used indicator that is colourless in acidic solutions and turns pink in basic solutions, with a colour change range of pH 8.2 to 10.
