Question

When hydrogen gas is passed on heated copper oxide?

Answer 1

✔✅If hydrogen gas is passed over heated copper oxide (CuO), the black coating on the surface turns brown as the reverse reaction takes place and copper is obtained. The hydrogen is gaining oxygen and is being oxidised.In other words, one reactant gets oxidised while the other gets reduced.

Answer 2

Answer:

When hydrogen gas is passed over copper oxide, copper oxide is reduced to copper and hydrogen gets oxidized to H2O. When hydrogen gas is passed over heated copper (II) oxide, copper and steam are formed.

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