`NaBr+MnO_(2)+H_(2)SO_(4)(Conc.) to MnSO_(4)+Br_(2)uarr`

Options

A. For disproportionation reaction.
B. For comproportionation reaction.
C. For either intermolecular redox reaction or displacement reaction
D. For either thermal combination redox reaction or thermal decomposition redox reaction.

Answer

To determine the type of reaction given by the equation:

\[ \text{NaBr} + \text{MnO}_2 + \text{H}_2\text{SO}_4 \rightarrow \text{MnSO}_4 + \text{Br}_2 \]

we will analyze the oxidation states of the elements involved in the reaction.

### Step 1: Assign Oxidation States
1. **Sodium (Na)** in NaBr has an oxidation state of +1.
2. **Bromine (Br)** in NaBr has an oxidation state of -1.
3. In **MnO₂**, oxygen (O) has an oxidation state of -2. Since there are 2 oxygen atoms, manganese (Mn) must have an oxidation state of +4 to balance the -4 from the oxygen.
4. In **H₂SO₄**, hydrogen (H) has an oxidation state of +1, and oxygen (O) has an oxidation state of -2. To find the oxidation state of sulfur (S), we set up the equation:
\[ +2 + X + 4(-2) = 0 \implies X = +6 \]
So, sulfur has an oxidation state of +6.
5. In **MnSO₄**, the sulfate ion (SO₄) has a charge of -2, which means manganese (Mn) must have an oxidation state of +2 to balance it.
6. **Bromine (Br)** in Br₂ has an oxidation state of 0 because it is in its elemental form.

### Step 2: Identify Changes in Oxidation States
- **Bromine (Br)** changes from -1 (in NaBr) to 0 (in Br₂). This indicates that bromine is being oxidized.
- **Manganese (Mn)** changes from +4 (in MnO₂) to +2 (in MnSO₄). This indicates that manganese is being reduced.

### Step 3: Determine the Type of Reaction
Since one species (Br) is being oxidized and another species (Mn) is being reduced, this reaction is classified as a **redox reaction** (reduction-oxidation reaction).

### Step 4: Classify as Intermolecular Redox Reaction
Because multiple reactants (NaBr, MnO₂, and H₂SO₄) are involved in the redox process, this specific type of redox reaction can be classified as an **intermolecular redox reaction**.

### Conclusion
The reaction is an **intermolecular redox reaction**.