Question

name a gas which reduces hot copper (||) oxide to copper.

Answer 1

Hydrogen gas is the answer

Answer 2

The hydrogen gas reduces hot copper (||) oxide to copper.

Explanation:

• This chemical reaction involves the process of the oxidation and the process of reduction. Initially the copper is heated using a burner vigorously. It will become black in colour.

• $\bold{2 \mathrm{Cu}+\mathrm{O}_{2^{-}} \rightarrow 2 \mathrm{CuO}}$

• Then this copper oxide is then placed in the atmosphere of $\mathrm{H}_{2}$, then it eventually turns into copper colour.

• $\bold{\mathrm{CuO}+\mathrm{H}_{2} \rightarrow \mathrm{Cu}+\mathrm{H}_{2} \mathrm{O}}$

• This copper oxide will react with hydrogen and produces copper and water.

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