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What do you observe when you add a few drops of acetic acid to a test-tube containing : (i) phenolphthalein (ii) distilled water

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What do you observe when you add a few drops of acetic acid to a test-tube containing :

(i) phenolphthalein

(ii) distilled water

(iii) universal indicator

(iv) Sodium hydrogen carbonate powder
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1 Answer

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(i) No change/remains colourless

(ii) No change

(iii) Turns pink/orange

(iv) Evolution of colourless gas

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