In the reaction CuO + H$_2$ $\longrightarrow$ Cu + H$_2$O, which state…

Question

In the reaction CuO + H$_2$ $\longrightarrow$ Cu + H$_2$O, which statement is correct?

Accepted Answer

B. CuO is reduced and H$_2$ is oxidised

1. CuO loses its oxygen atom to become Cu; loss of oxygen is reduction, so CuO is reduced.
2. H$_2$ gains that oxygen to form H$_2$O; gain of oxygen is oxidation, so H$_2$ is oxidised.
3. Oxidation and reduction occur together, making this a redox reaction.
4. The option reversing the roles is wrong, and the 'both reduced' or 'both oxidised' options ignore that one species must be oxidised while the other is reduced.
_Source: Balbharati (Maharashtra Board) Class 10 Science & Technology, Ch 3 "Chemical Reactions and Equations", p.52_

Answer

both CuO and H$_2$ are reduced

Answer

both CuO and H$_2$ are oxidised

Answer

CuO is oxidised and H$_2$ is reduced

In the reaction CuO + H$_2$ $\longrightarrow$ Cu + H$_2$O, which statement is correct?

Keep practising Unit 4A1: Types of Chemical Reactions