When hydrogen gas (H₂) is passed over copper oxide (CuO), copper (Cu) is produced along with water (H₂O). The balanced chemical equation for the given reaction is

Which substance is oxidized in the given reaction?

H₂

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H₂O

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CuO

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Solution

The correct option is A
H₂

The given reaction is an example of a redox reaction. In such a reaction, if a substance gains oxygen or loses hydrogen, it is said to be oxidized and if a substance loses oxygen or gains hydrogen during the reaction, it is said to be reduced. In the given reaction, hydrogen gains oxygen to form water and copper oxide loses oxygen to form copper.

Hence, H₂ is oxidized and CuO is reduced in the given reaction.

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Similar questions

CuO + H_{2} \to Cu + H_{2} O

C u O + H_{2} \to C u + H_{2} O

For the reaction $C u O + H_{2} \to C u + H_{2} O$
Which of the following statement is correct?

C u O + N H_{3} ⟶ C u + H_{2} O + N_{2}

C u O + H_{2} \to C u + H_{2} O

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