`PbO_(2)+HNO_(3)(dil.)to`No dissolution.

Options

A. For precipitate formation reaction
B. For precipitate dissolution reaction
C. For precipitate exchange reaction
D. For no reaction

Answer

To solve the question regarding the reaction between lead dioxide (PbO₂) and dilute nitric acid (HNO₃), we will analyze the situation step by step.

### Step-by-Step Solution:

1. **Identify the Reactants**:
The reactants in this case are lead dioxide (PbO₂) and dilute nitric acid (HNO₃).

2. **Understand the Nature of the Reaction**:
The question states that there is "no dissolution." This implies that when PbO₂ is mixed with dilute HNO₃, no reaction occurs, and PbO₂ does not dissolve in the acid.

3. **Evaluate Possible Reaction Types**:
We will consider the options provided:
- **Option A**: Precipitate formation reaction - This would imply that a solid precipitate is formed from the reaction, which is not the case here.
- **Option B**: Precipitate dissolution reaction - This would mean that a solid precipitate is dissolved in the reaction, which again does not apply since PbO₂ does not dissolve.
- **Option C**: Precipitate exchange reaction - This requires precipitates on both sides of the equation, which is not applicable here.
- **Option D**: No reaction - This suggests that when the reactants are combined, no change occurs, which aligns with the information given.

4. **Conclusion**:
Since there is no dissolution of PbO₂ in dilute HNO₃, the correct classification of the reaction is that there is "no reaction" taking place. Therefore, the answer is **Option D: No reaction**.

### Final Answer:
The reaction of PbO₂ with dilute HNO₃ results in **no dissolution**, indicating that there is **no reaction**.

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