- Reduction A decrease in oxidation state. Copper (in CuO) goes from +2 to 0. - Oxidation An increase in oxidation state. Hydrogen (in H₂) goes from 0 to +1. This is a classic example of a redox (reduction-oxidation) reaction.
Correct statement for the reaction, $ \text{CuO} + \text{H}_2 \xrightarrow{\Delta} \text{Cu} + \text{H}_2\text{O}$, is
Asked in JUNIOR ACCOUNTANT AND TRA 2013 · Topic: Inorganic Chemistry (Inorganic Reaction Mechanisms)
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Answer: A. Copper is reduced and hydrogen is oxidised.
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