Q number 13 you must have
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1. the copper vessel when leave in air it creates a layer of copper carbonate on it which is basic in nature.
2. when we tarnished the copper vessels with lemon juice which is acidic in nature, the neutralisation reaction occurs.
3. that's why it cleans the the copper vessel..
hsrana41:
Bro please answer 14 one also
wait a minute. ...
can you select my answer brainliest?
When the option come I will select it but follow me please
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