Chemistryeasy · Past Paper
Which substance is reduced in the reaction: CuO + H2 → Cu + H2O?
ACopper oxide (CuO)
BHydrogen (H2)
CCopper (Cu)
DWater (H2O)
✓ Correct Answer: A — Copper oxide (CuO)
Reduction is the removal of oxygen. In this reaction, CuO loses oxygen to become Cu, so CuO is reduced.
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