What should be the product when `NaBr` is added to `H_2SO_4`

Explanation

To determine the products when sodium bromide (NaBr) is added to sulfuric acid (H₂SO₄), we can analyze the reaction step by step.

### Step 1: Identify the Reactants
The reactants in this reaction are sodium bromide (NaBr) and sulfuric acid (H₂SO₄).

### Step 2: Understand the Reaction
When NaBr is added to H₂SO₄, a reaction occurs where NaBr reacts with H₂SO₄ to produce sodium sulfate (Na₂SO₄) and hydrogen bromide (HBr).

### Step 3: Write the Initial Reaction Equation
The initial reaction can be represented as:
\[ \text{NaBr} + \text{H}_2\text{SO}_4 \rightarrow \text{Na}_2\text{SO}_4 + \text{HBr} \]

### Step 4: Consider Concentrated H₂SO₄
If concentrated sulfuric acid is used, it can further oxidize the bromide ions (Br⁻) to bromine (Br₂). This means that in the presence of excess concentrated H₂SO₄, we can also produce bromine gas.

### Step 5: Write the Complete Reaction
Taking into account the formation of bromine, the complete reaction can be represented as:
\[ 2 \text{NaBr} + \text{H}_2\text{SO}_4 \rightarrow \text{Na}_2\text{SO}_4 + 2 \text{HBr} + \text{Br}_2 \]

### Conclusion
The products of the reaction when NaBr is added to H₂SO₄ are sodium sulfate (Na₂SO₄), hydrogen bromide (HBr), and bromine (Br₂).

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