`KMnO_(4) overset(Delta) to K_(2)MnO_(4)+MnO_(2)+O_(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 solve the question regarding the reaction of potassium permanganate (KMnO₄) decomposing into potassium manganate (K₂MnO₄), manganese dioxide (MnO₂), and oxygen gas (O₂), we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Reaction Type**:
The given reaction is:
\[ KMnO_4 \overset{\Delta}{\rightarrow} K_2MnO_4 + MnO_2 + O_2 \]
This indicates that KMnO₄ is breaking down into multiple products.

2. **Understand the Nature of the Reaction**:
A decomposition reaction is characterized by a single compound breaking down into two or more simpler substances. In this case, KMnO₄ is decomposing into K₂MnO₄, MnO₂, and O₂.

3. **Classify the Reaction**:
Since KMnO₄ is breaking down into different products, this is classified as a thermal decomposition reaction. Thermal decomposition reactions often require heat (indicated by the Δ symbol) to proceed.

4. **Conclusion**:
The correct classification of the reaction is a thermal decomposition reaction. Thus, the answer to the question is that this reaction is a decomposition reaction.

### Final Answer:
The reaction \( KMnO_4 \overset{\Delta}{\rightarrow} K_2MnO_4 + MnO_2 + O_2 \) is a **decomposition reaction**.

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