For the reaction `PbO +H_2 rarr Pb+H_2O`, which of the following statements is wrong?

Options

A. `H_2` is a reducing agent.
B. PbO is an oxidising agent.
C. PbO is oxidised to Pb
D. `H_2` is oxidised to `H_2O`

Explanation

To determine which statement is wrong regarding the reaction \( \text{PbO} + \text{H}_2 \rightarrow \text{Pb} + \text{H}_2\text{O} \), we can analyze each statement based on the definitions of reducing and oxidizing agents, as well as the changes occurring in the reactants and products.

### Step-by-Step Solution:

1. **Identify the Reaction Components:**
- The reactants are lead oxide (\( \text{PbO} \)) and hydrogen (\( \text{H}_2 \)).
- The products are lead (\( \text{Pb} \)) and water (\( \text{H}_2\text{O} \)).

2. **Determine the Role of Hydrogen (\( \text{H}_2 \)):**
- In this reaction, hydrogen acts as a reducing agent. A reducing agent is a substance that donates electrons and reduces another substance.
- Here, hydrogen removes oxygen from lead oxide, thus reducing \( \text{PbO} \) to lead (\( \text{Pb} \)). Therefore, the statement "H2 is the reducing agent" is **correct**.

3. **Determine the Role of Lead Oxide (\( \text{PbO} \)):**
- Lead oxide is the substance that is being reduced (loses oxygen) and is thus acting as an oxidizing agent. An oxidizing agent is a substance that gains electrons and oxidizes another substance.
- Since \( \text{PbO} \) adds oxygen to hydrogen, it is indeed an oxidizing agent. Therefore, the statement "PbO is the oxidizing agent" is **correct**.

4. **Assess the Oxidation of Lead Oxide:**
- The statement "Lead oxide is oxidized to Pb" is incorrect. In this reaction, lead oxide is reduced to lead, meaning it loses oxygen. Therefore, this statement is **wrong**.

5. **Assess the Oxidation of Hydrogen:**
- The statement "Hydrogen is oxidized to \( \text{H}_2\text{O} \)" is correct because hydrogen gains oxygen to form water, which is consistent with the definition of oxidation (gain of oxygen).

### Conclusion:
The wrong statement regarding the reaction \( \text{PbO} + \text{H}_2 \rightarrow \text{Pb} + \text{H}_2\text{O} \) is:
- "Lead oxide is oxidized to Pb."

### Final Answer:
The wrong statement is: **"Lead oxide is oxidized to Pb."**

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