Heavy water is the oxide of heavy hydrogen (deuterium) and is also called deuterium oxide. It is represented as `D_(2)O`. Heavy water is chemically similar to ordinary water heavy water is used for the neutron moderatory, as a trracer compound and for the preparation of deuterium. Reaction of heavy water with alkali metals liberates heavy hydrogen. heavy water can also be used for exchanging labile hydrogen with deuterium completely or partially. heavy water reacts slower than ordinary water but forms stronger bonds with other elements as compared to hydrogen.
Q. Reaction of `N_(2)O_(5) and D_(2)O` produces

Options

A. `DNO_(3)`
B. `DNO_(2)`
C. NO
D. `NO_(2)`

Answer

To solve the problem of what reaction occurs between nitrogen pentoxide (N₂O₅) and heavy water (D₂O), we can follow these steps:

### Step 1: Understand the Reactants
- **Nitrogen Pentoxide (N₂O₅)**: This is a strong oxidizing agent and is known to react with water to form nitric acid (HNO₃).
- **Heavy Water (D₂O)**: This is chemically similar to regular water (H₂O) but contains deuterium, an isotope of hydrogen.

### Step 2: Identify the Reaction
When nitrogen pentoxide reacts with water, it produces nitric acid. The reaction can be represented as:
\[ \text{N}_2\text{O}_5 + \text{H}_2\text{O} \rightarrow 2 \text{HNO}_3 \]

### Step 3: Substitute Heavy Water
Since D₂O is chemically similar to H₂O, we can substitute D₂O into the reaction:
\[ \text{N}_2\text{O}_5 + \text{D}_2\text{O} \rightarrow 2 \text{DNO}_3 \]

### Step 4: Identify the Product
The product formed from this reaction is deuterium nitrate (DNO₃), which is analogous to nitric acid but contains deuterium instead of hydrogen.

### Conclusion
Thus, the reaction of nitrogen pentoxide (N₂O₅) with heavy water (D₂O) produces deuterium nitrate (DNO₃).

### Final Answer
The reaction of N₂O₅ and D₂O produces **DNO₃**.

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