Which of the following pairs produce deutronitric acid

Options

A. `NO_(2),H_(2)O`
B. `NO,D_(2)O`
C. `N_(2)O_(5),D_(2)O`
D. `N_(2),D_(2)O`

Explanation

To determine which pairs produce deuteronitric acid (DNO3), we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Chemical Formula**:
- Deuteronitric acid is represented as DNO3, where D stands for deuterium.

2. **Recognize the Reactants**:
- We need to find a pair of reactants that will yield DNO3. The likely candidates are deuterium oxide (D2O) and a nitrogen oxide, specifically N2O5.

3. **Write the Reaction**:
- The reaction can be written as:
\[ D2O + N2O5 \rightarrow 2 DNO3 \]

4. **Balance the Reaction**:
- Check if the reaction is balanced:
- Reactants:
- 2 deuterium (D) from D2O
- 2 nitrogen (N) from N2O5
- 5 oxygen (O) from N2O5 and 1 from D2O (total 6 O)
- Products:
- 2 deuterium (D) from 2 DNO3
- 2 nitrogen (N) from 2 DNO3
- 6 oxygen (O) from 2 DNO3
- The reaction is balanced.

5. **Conclusion**:
- Therefore, the pair that produces deuteronitric acid is D2O and N2O5.

6. **Select the Correct Option**:
- Based on the above analysis, the correct option is C.

### Final Answer:
The pair that produces deuteronitric acid is D2O and N2O5 (Option C).

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