Biology, 28.01.2021 18:50 Chris3529

The hydrogencarbonate indicator solution changes colour when the pH changes. At pH 8.4 it is red, at pH 7.4 it is yellow and at pH 9 it is purple. Predict the colour of the hydrogencarbonate indicator solution in the bottle nearest the lamp at the end of the investigation. Explain your answer. [3] Colour prediction: purple Explanation:

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The hydrogencarbonate indicator solution changes colour when the pH changes. At pH 8.4 it is red, at...

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