Question

You must have seen tarnished copper vessels being cleaned with lemon and tamarind juice. Explain why these sour substances arr effective in cleaning the cessels

Answer 1

Answer: In tarnished copper vessel there is layer formed due to corrosion which is basic in nature which is dissolved in the lemon or tamarind juice which are acidic in nature. Thus the vessel get thoroughly cleaned.

Answer 2

Tarnished vessel has a coating of basic copper carbonate, when we rub it using lemon/tamarind juice, which is acidic, this leads to the formation of a salt which is removed when we rinse it with water

And the tarnished layer of basic copper carbonate is removed