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Question
The green coloured coating that develops on a copper rod when it is left in open for some days, is of
The green coloured coating that develops on a copper rod when it is left in open for some days, is of
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Solution
The correct option is D copper carbonate
When exposed to the atmosphere, copper reacts with oxygen and forms copper oxide. The reaction occurs as follows:
2Cu (s)+O2 (g)→2CuO (s)
This on further reaction with carbon dioxide and water preset in air, and forms a greenish layer of basic copper carbonate. The reaction occurs as follows:
2CuO (s)+H2O(l)+CO2(g)→CuCO3(s).Cu(OH)2(s)
When exposed to the atmosphere, copper reacts with oxygen and forms copper oxide. The reaction occurs as follows:
2Cu (s)+O2 (g)→2CuO (s)
This on further reaction with carbon dioxide and water preset in air, and forms a greenish layer of basic copper carbonate. The reaction occurs as follows:
2CuO (s)+H2O(l)+CO2(g)→CuCO3(s).Cu(OH)2(s)
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