`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 analyze the given reaction and determine its type, we can follow these steps:

### Step 1: Write the Balanced Reaction
The reaction provided is:
\[ \text{NaBr} + \text{MnO}_2 + \text{H}_2\text{SO}_4 \text{(Conc.)} \rightarrow \text{MnSO}_4 + \text{Br}_2 \]

### Step 2: Identify Oxidation States
Next, we need to determine the oxidation states of the elements in the reactants and products.

- In NaBr:
- Na: +1
- Br: -1

- In MnO₂:
- Mn: +4
- O: -2 (there are 2 oxygen atoms, contributing -4)

- In H₂SO₄:
- H: +1 (2 H atoms contribute +2)
- S: +6
- O: -2 (4 O atoms contribute -8)

- In MnSO₄:
- Mn: +2
- S: +6
- O: -2 (4 O atoms contribute -8)

- In Br₂:
- Br: 0 (as it is in elemental form)

### Step 3: Determine Changes in Oxidation States
Now, we analyze the changes in oxidation states:

- For Br:
- Changes from -1 in NaBr to 0 in Br₂ (oxidation)

- For Mn:
- Changes from +4 in MnO₂ to +2 in MnSO₄ (reduction)

### Step 4: Classify the Reaction
Since we have both oxidation and reduction occurring simultaneously, this indicates that it is a redox reaction.

### Step 5: Determine the Type of Redox Reaction
Next, we need to classify the type of redox reaction:
- **Disproportionation Reaction**: A single substance is both oxidized and reduced. This does not apply here as NaBr is not undergoing both processes.
- **Comproportionation Reaction**: Two reactants with the same element in different oxidation states react to form a product with an intermediate oxidation state. This does not apply here either.
- **Intermolecular Redox Reaction**: Different species are involved in oxidation and reduction, which fits our case.
- **Thermal Combination/Decomposition**: Not applicable since no temperature is specified.

### Conclusion
The correct classification for the reaction is:
**Intermolecular Redox Reaction**.

### Final Answer
The correct option is **C: either intermolecular redox reaction or displacement reaction**.

---