CBSE Class 10 Answered
Giving chemical equation answer the following: (a) What happens when copper is heated in air? (b) What happens when the product obtained in above reaction is heated in hydrogen?
Asked by Topperlearning User | 18 Mar, 2015, 08:53: AM
Expert Answer
(a) When copper is heated in air, it reacts with the oxygen of air to form a black compound copper oxide.
2Cu + O2 
2CuO
(b) When copper oxide formed in above reaction is heated in hydrogen, then copper oxide is reduced and brown copper metal is obtained.
CuO + H2 Cu + H2O
Answered by | 18 Mar, 2015, 10:53: AM
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