Which of the following statement is correct about `C_2H_5Br` ?

Options

A. It reacts with metallic Na to give only ethane .
B. It gives nitroethane on heating with aqueous ethanolic solution of `AgNO_2`.
C. It gives `C_2H_2OH` on boiling with alcoholic potash.
D. It forms ethane on heating wit silver acetate.

Explanation

To determine which statement is correct about C₂H₅Br (Bromoethane), let's analyze each option step by step.

### Step 1: Analyze Option A
**Statement:** "It reacts with metallic sodium to give only ethane."

- **Reaction:** When bromoethane (C₂H₅Br) reacts with metallic sodium in dry ether, it undergoes the Wurtz reaction.
- **Expected Product:** The reaction leads to the coupling of two ethyl groups, resulting in butane (C₄H₁₀) as the product, not ethane (C₂H₆).

**Conclusion:** This statement is incorrect.

### Step 2: Analyze Option B
**Statement:** "It gives nitroethane on heating with ethanolic solution of AgNO₂."

- **Reaction:** When bromoethane is treated with an ethanolic solution of silver nitrite (AgNO₂), a nucleophilic substitution reaction occurs.
- **Expected Product:** The nitro group (NO₂) from AgNO₂ replaces the bromine atom, resulting in nitroethane (C₂H₅NO₂).

**Conclusion:** This statement is correct.

### Step 3: Analyze Option C
**Statement:** "It gives C₂H₅ on boiling with Alcoholic Potash."

- **Reaction:** When bromoethane is treated with alcoholic potassium hydroxide (KOH), a dehydrohalogenation reaction occurs.
- **Expected Product:** This reaction leads to the formation of ethene (C₂H₄) as a product, not C₂H₅ (ethyl group).

**Conclusion:** This statement is incorrect.

### Step 4: Analyze Option D
**Statement:** "It forms ethane on heating with Silver Acetate."

- **Reaction:** When bromoethane reacts with silver acetate (AgOAc), a reaction occurs that leads to the formation of propane (C₃H₈) and not ethane.
- **Expected Product:** The reaction results in propane and silver bromide (AgBr) as byproducts.

**Conclusion:** This statement is incorrect.

### Final Conclusion
The only correct statement about C₂H₅Br is **Option B**, which states that it gives nitroethane on heating with an ethanolic solution of AgNO₂.

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