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Continue to ChatTurmeric paper https://www.kitchenchemistry.uk/topics/reactions-that-involve-colour-changes/a-coloured-spice-makes-a-good-acid-base-indicator/
Turmeric paper https://www.kitchenchemistry.uk/topics/reactions-that-involve-colour-changes/a-coloured-spice-makes-a-good-acid-base-indicator/