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CBSE Class 10 Answered

What reaction takes place when copper gets tarnished. Name the products formed while it gets cleaned when we rub it with lemon or tamarind juice.
Asked by tgreat181121 | 02 Mar, 2019, 03:53: PM
answered-by-expert Expert Answer
Copper reacts with moist carbon dioxide in air to form copper carbonate and as a result, copper vessel loses its shiny brown surface forming a green layer of copper carbonate.
The citric acid present in the lemon or tamarind neutralises the basis copper carbonate and dissolves the layer.
Answered by Sivanand Patnaik | 02 Mar, 2019, 06:32: PM

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