Which of the following are correct statements about `C_(2)H_(5)`Br.

Options

A. It reacts with metallic Na to give ethane
B. It gives nitroethane on heating with aqueous ethanolic solution of `"AgNO"_(2)`
C. It gives `C_(2)H_(5)`OH as major product on boiling with alcoholic potash
D. none of these

Answer

To determine which statements about C2H5Br (ethyl bromide) are correct, we will analyze each option provided.

### Step-by-Step Solution:

1. **Analyzing Option 1:**
- The statement claims that ethyl bromide reacts with metallic sodium to give ethane.
- In reality, when ethyl bromide reacts with metallic sodium in the presence of dry ether, it undergoes a reaction known as the Wurtz reaction, which leads to the formation of butane (C4H10) and sodium bromide (NaBr).
- Therefore, this statement is **incorrect**.

2. **Analyzing Option 2:**
- The statement claims that ethyl bromide gives nitroethane when reacted with an aqueous ethanolic solution of silver nitrite.
- The reaction mechanism involves the nucleophilic attack of the nitrite ion (from silver nitrite) on the ethyl bromide, leading to the formation of nitroethane (C2H5NO2) and silver bromide (AgBr).
- This reaction is indeed correct, making this statement **correct**.

3. **Analyzing Option 3:**
- The statement claims that ethyl bromide gives ethanol as the major product when boiled with alcoholic potassium hydroxide (KOH).
- In the presence of alcoholic KOH, the reaction favors elimination rather than substitution. The hydroxide ion (OH-) acts as a base, leading to the formation of ethylene (C2H4) through dehydrohalogenation, rather than ethanol.
- Therefore, this statement is **incorrect**.

### Conclusion:
- The only correct statement about C2H5Br is from **Option 2**: It gives nitroethane with an aqueous ethanolic solution of silver nitrite.