Question

orange juice Reaction with Phenolphthalein  indicator

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Answer 1

Answer:

(i) Phenolphthalein (whose natural colour is colourless) is colourless in acidic medium. (ii) Phenolphthalein gives pink colour in basic medium or solution. (i) Methyl orange (whose natural colour is orange) gives pink colour in acidic medium or solution.

Explanation:

Orange juice contains citric acid. Acids react with Phenolphthalein indicator and does not show any colour change. Acids react with blue litmus paper and change the colour of litmus paper from blue to red. Acids show no colour change in red litmus paper.

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