Question

Calcium oxide can be reduced to calcium, by heating with sodium metal. Which compound would act as an oxidizing agent in the above process? a) Sodium b) sodium oxide c) calcium d) calcium oxide​

Answer 1

Answer:

D) Calcium Oxide

Explanation:

Here,

Calcium Oxide is acting as an oxidizing agent as it is helping Na (Sodium Metal to gain Oxygen) and Na is acting as the reducing agent as it is getting oxidized.

So therefore,

1. Oxidized- Na (Sodium Metal)
2. Reduced- CaO (Calcium Oxide)
3. Oxidizing Agent- CaO ( Calcium Oxide)
4. Reducing Agent- Na (Sodium Metal)

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Answer 2

The correct option is d.

• A species which reduced itself and oxidise other substance is called oxidizing agent.
• A species which oxidised itself and reduce another substance called reducing agent.
• The reaction between calcium oxide and sodium is-
• $CuO+Na\rightarrow Cu+NaO$.
• Here oxidation state of Cu in CuO is +2. It is reduced to Cu and it oxidised Na to NaO.
• So, here CuO is oxidizing agent.