physics class 10. answer plz.... no spam... I will mark as brainliest...
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HI,
1) Phenolphthalein
Phenolphthalein will remain colourless due to acidic medium (acetic acid).
2) Sodium Hydrogen Carbonate
When added to sodium hydrogen carbonate powder, acetic acid causes effervescence because of the evolution of carbon dioxide gas in the process.
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