Assertion: The reaction, `C_(2)H_(5)Br +2Na+C_(2)H_(5)Br to C_(4)H_(10)+2NaBr` is known as Wurtz reaction.
Reason: The reaction is carried out in presence of dry ether.

Options

A. If both assertion and reson are true and reason is the correct explanation of assertion
B. If both assertion and reason are true but reason is not the correct explanation of 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 both the assertion and the reason provided.

### Step 1: Understanding the Assertion
The assertion states that the reaction:
\[ C_2H_5Br + 2Na \rightarrow C_4H_{10} + 2NaBr \]
is known as the Wurtz reaction.

**Explanation**:
- The Wurtz reaction involves the coupling of alkyl halides (in this case, ethyl bromide, \(C_2H_5Br\)) in the presence of sodium metal to form higher alkanes (in this case, butane, \(C_4H_{10}\)).
- The reaction proceeds through the formation of free radicals, which then couple to form the alkane.

### Step 2: Understanding the Reason
The reason states that the reaction is carried out in the presence of dry ether.

**Explanation**:
- Dry ether is used as a solvent in the Wurtz reaction because it prevents the formation of alcohols that would occur if water were present.
- In the presence of water, the sodium would react with water instead of the alkyl halide, leading to the formation of alcohols rather than the desired alkane.

### Step 3: Conclusion
Both the assertion and the reason are correct. The reaction described is indeed the Wurtz reaction, and it is correctly carried out in the presence of dry ether.

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

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