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| 1. |
Write the name of basic carbonate layer which formed on copper vessels. |
| Answer» Copper\xa0turns\xa0green\xa0because of chemical reactions with the elements. Just as iron that is left unprotected in open air will corrode and form a flaky orange-red outer\xa0layer,\xa0copper\xa0that is exposed to the elements undergoes a series of chemical reactions that give the shiny metal a pale\xa0green\xa0outer\xa0layer called\xa0a patina.\xa0Copper\xa0metal when exposed to air turns\xa0green\xa0in colour due to corrosion. When\xa0copper\xa0vessel is exposed to air in rainy season, the metal reacts with gases and moisture and atmospheric gases to form a mixture of\xa0copper\xa0carbonate and\xa0copper\xa0hydroxide. This\xa0gives\xa0a\xa0green\xa0colour to the surface of\xa0copper\xa0metal. | |