Neutralisation
Equipment
Universal indicator
- Hydrochloric acid
- Sodium hydroxide
- 4 test tubes
- test tube rack
- 2 plastic pipettes
Method
1.Take a test tube rack with 1 boiling tube at each end and 4 test tubes
2.Half fill the boiling tube at one end with Sodium hydroxide
3. Half fill the boiling tube at the other end with Hydrochloric acid
4.Fill each test tube with 5 drops of Universal indicator
5. Using pipettes you will add drops of acid or alkaline to the test tubes to make colours of Red,Orange,Yellow,Blue and Violet
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