method for preparation of litmus indicator
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The most commonly used natural indicator is litmus. It is extracted from lichens (. It has a mauve (purple) colour in distilled water. When added to an acidic solution, it turns red and when added to a basic solution, it turns blue.
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Answer:
- Boil your red cabbage until the water it is boiling in is a red-purple colour from the cabbage. ...
- Cut your blotting paper into small strips.
- Put your blotting paper strips into the solution and leave them there to soak.
- Take them out and leave to dry.
- Your litmus strips are now ready to use!
Explanation:
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