SvS Biology 2000: Indicators
Your task is to establish a protocol for indicators of pH - this means that you must use a variety of indicators on substances of known pH to work out what the colour of a particular indicator means. Test the following indicators:
- Universal Indicator
- Bromothymol Blue
- Phenolphthalein
- Phenol Red
- Red Litmus
- Blue Litmus
- Methyl Orange
Each member of your group must make a copy of a table that records the colour of each of the indicators in a specific pH range, as suggested below:
Indicator pH 1 pH 4 pH 7 pH 9 pH 12 Universal Bromothymol Phenolphthalein Phenol Red Red Litmus Blue Litmus Methyl Orange
What is the best indicator to use for testing an unknown substance?
HOME
S. van Strien