Bromine react with NaOH to produce

Options

A. NaBr and `NaBrO_(3)` in hot solution
B. NaBr and `NaBrO` in cold solution
C. NaBr and NaBrO in hot solution
D. Only NaBr in cold and NaBrO in hot

Answer

To solve the question regarding the reaction of bromine with sodium hydroxide, we will analyze the reactions that occur at different temperatures.

### Step-by-Step Solution:

1. **Identify the Reactants**:
- The reactants in this case are bromine (Br₂) and sodium hydroxide (NaOH).

2. **Determine the Temperature Conditions**:
- The reaction can occur under two conditions: hot solution (approximately 50 to 80 degrees Celsius) and cold solution (approximately 0 to 5 degrees Celsius).

3. **Reaction in Hot Solution**:
- When bromine reacts with sodium hydroxide in a hot solution, the products formed are:
- Sodium bromide (NaBr)
- Sodium bromate (NaBrO₃)
- Water (H₂O)
- The balanced equation for this reaction is:
\[ \text{Br}_2 + 2 \text{NaOH} \rightarrow \text{NaBr} + \text{NaBrO}_3 + \text{H}_2\text{O} \]

4. **Reaction in Cold Solution**:
- When bromine reacts with sodium hydroxide in a cold solution, the products formed are:
- Sodium bromide (NaBr)
- Sodium hypobromite (NaBrO)
- Water (H₂O)
- The balanced equation for this reaction is:
\[ \text{Br}_2 + 2 \text{NaOH} \rightarrow 2 \text{NaBr} + \text{NaBrO} + \text{H}_2\text{O} \]

5. **Summarize the Products**:
- In hot solution, the products are NaBr and NaBrO₃.
- In cold solution, the products are NaBr and NaBrO.

6. **Analyze the Options**:
- Option 1: Sodium bromide and sodium bromate in hot solution (Correct)
- Option 2: Sodium bromide and sodium hypobromite in cold solution (Correct)
- Option 3: Sodium bromide and sodium hypobromite in hot solution (Incorrect)
- Option 4: Only sodium bromide in cold and sodium bromate in hot solution (Incorrect)

### Conclusion:
The correct answers are:
- Option 1: Sodium bromide and sodium bromate in hot solution.
- Option 2: Sodium bromide and sodium hypobromite in cold solution.