what type of reaction is formed when copper oxide combined with hydrogen gas ? define the reaction .
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Answer:
hydrogen gas
Explanation:
copperhydrogen
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Explanation:
Copper combines with oxygen to form copper oxide. Following figure shows formation of copper oxide. 2 Cu + O2 → 2 CuO ; CuO + H2 → Cu + H2O If hydrogen gas is passed over this heated material (CuO ) the black coating of the surface turns brown as the reverse reaction takes place and copper is obtained.
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