In the given reaction which substance undergoes oxidation?

​$$2Cu + O_2 \rightarrow 2CuO$$​​

Correct option is B

The correct answer is: (B) Only Copper

The given reaction is:

$$2Cu+O2→2CuO$$​​

• Oxidation is the process where a substance loses electrons (or increases its oxidation state).
• Reduction is the process where a substance gains electrons (or decreases its oxidation state).

In this reaction:

• Copper (Cu) undergoes oxidation. Its oxidation state changes from 0 in elemental copper to +1 in Copper(II) oxide (CuO). This means copper loses electrons, which is the definition of oxidation.
• Oxygen (O₂) undergoes reduction, as it goes from an oxidation state of 0 in O₂ to -2 in CuO (gains electrons).

Additional Knowledge:

• Copper oxide (CuO) is the product of the reaction, not the substance undergoing oxidation.

• Oxygen undergoes reduction, not oxidation. Only Copper undergoes oxidation.

• Oxygen is undergoing reduction, not oxidation.