Question

(C) A metal oxide that is reduced by hydrogen i​

Answer 1

Answer:

Reduction of copper oxide with hydrogen:

CuO+H2→Cu+H2O2Cu+O2→2CuO

Al, Ca, Na are present higher in the reactivity series, so their oxides are not reduced by hydrogen. While copper comes below hydrogen in the activity series, so its oxide is reduced by hydrogen

Explanation:

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Answer 2

Answer:

Explanation:

Reduction of copper oxide with hydrogen:

CuO+H  2

gives Cu+H  2

O

Cu+O  2

gives 2CuO

Al, Ca, Na are present higher in the reactivity series, so their oxides are not reduced by hydrogen. While copper comes below hydrogen in the activity series, so its oxide is reduced by hydrogen.

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