Assertion Fe rects with HCI produce `H_(2)` gas
Reason Fe is better reducing agent than `H_(2)`

Options

A. If both assertion and reasn are true and reason is the true explanation of the assertion
B. If both assertion and reason are true but reason is not the true explanation of the assertion
C. If assertion is true but reason is false
D. If both assertion and reason are false

Answer

To solve the question, we need to analyze the assertion and the reason provided.

**Assertion:** Fe reacts with HCl to produce H₂ gas.

**Reason:** Fe is a better reducing agent than H₂.

### Step-by-Step Solution:

1. **Understanding the Reaction:**
- When iron (Fe) reacts with hydrochloric acid (HCl), it displaces hydrogen from the acid. The reaction can be represented as:
\[ \text{Fe} + 2 \text{HCl} \rightarrow \text{FeCl}_2 + \text{H}_2 \uparrow \]
- In this reaction, hydrogen gas (H₂) is evolved.

2. **Reactivity Series:**
- To determine if Fe can displace H₂ from HCl, we refer to the reactivity series of metals. In the series, metals are arranged in order of their reactivity.
- Iron is above hydrogen in the reactivity series, indicating that iron is more reactive than hydrogen.

3. **Conclusion on the Assertion:**
- Since iron can displace hydrogen from hydrochloric acid and produce hydrogen gas, the assertion is **true**.

4. **Understanding Reducing Agents:**
- A reducing agent is a substance that donates electrons to another substance, causing the other substance to be reduced while itself gets oxidized.
- In this case, iron (Fe) can lose electrons to form Fe²⁺ ions:
\[ \text{Fe} \rightarrow \text{Fe}^{2+} + 2e^- \]
- The oxidation potential of iron (Fe) is +0.44 V, indicating a tendency to oxidize.

5. **Comparing with Hydrogen:**
- Hydrogen gas (H₂) can also act as a reducing agent, but its oxidation potential is 0 V (when it loses electrons to form H⁺):
\[ \text{H}_2 \rightarrow 2\text{H}^+ + 2e^- \]
- Since the oxidation potential of iron is higher than that of hydrogen, iron is a better reducing agent.

6. **Conclusion on the Reason:**
- The reason provided is also **true** because iron is indeed a better reducing agent than hydrogen.

### Final Conclusion:
Both the assertion and the reason are true, and the reason correctly explains the assertion.

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