Chemistry, asked by bharatgarg329, 5 hours ago

) When hydrogen gas is passed over heated copper oxide, the black coating on the surface or the compound turns brown. The hydrogen gas:

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Answered by neetasingh1121

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Answered by hgopi812829

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It is a combination reaction. If hydrogen gas is passed over heated copper $\left( {2CuO} \right)$, the black coating on the surface turns brown as the reverse reaction takes place and copper is obtained. Reactions taking place here are oxidation and reduction. Also known as redox reaction.

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