Question

What is the use of hydrogen when passing it over heated copper ii oxide

Answer 1

Answer:

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Explanation:

When hydrogen gas is passed over heated copper (II) oxide, copper and steam are. When hydrogen gas is passed over heated copper (II) oxide, copper and steam are formed. Write the balanced chemical equation for this reaction and state (i) the substance oxidized and (ii) the substance reduced in the reaction.

Answer 2

Answer: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.