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I want to use red cabbage extract solution to know pH of different drinks, I can see changes of colour directly based on the chemical reaction and though comparing with pre-testing I have done, I can know pH of drinks easily. | I want to use red cabbage extract solution to know pH of different drinks, I can see changes of colour directly based on the chemical reaction and though comparing with pre-testing I have done, I can know pH of drinks easily. | ||
The sketch of pH-testing is | The sketch of pH-testing is | ||
[[File:12.6 bio-lab first idea.008.jpeg|400px]] | |||
However, there’s a problem which I’m not sure: | However, there’s a problem which I’m not sure: | ||