The mixed anhydride of nitrogen is:

Options

A. `N_(2)O_(2)(2NO)`
B. `N_(2)O_(4)(2NO_(2))`
C. `N_(2)O_(5)`
D. `N_(2)O_(3)`

Answer

To determine the mixed anhydride of nitrogen from the given options, we will follow these steps:

### Step 1: Understand the Definition of Mixed Anhydride
A mixed anhydride is defined as a compound that reacts with water to produce a mixture of two acidic anhydrides.

### Step 2: Analyze Each Option
We will analyze each option to see if it meets the criteria of a mixed anhydride.

#### Option 1: N2O2 to NO
- When N2O2 reacts with water, no significant reaction occurs. Therefore, it does not produce two acidic anhydrides.
- **Conclusion:** Not a mixed anhydride.

#### Option 2: N2O4 to NO2
- When N2O4 reacts with water, it forms nitric acid (HNO3) and nitrous acid (HNO2).
- Both HNO3 and HNO2 are acidic anhydrides.
- **Conclusion:** This option produces two acidic anhydrides, making it a mixed anhydride.

#### Option 3: N2O5
- When N2O5 reacts with water, it produces nitric acid (HNO3) and does not yield a second acidic anhydride.
- **Conclusion:** Not a mixed anhydride.

#### Option 4: N2O3
- When N2O3 reacts with water, it forms nitric acid and does not yield a second acidic anhydride.
- **Conclusion:** Not a mixed anhydride.

### Step 3: Identify the Correct Answer
From our analysis, the only option that produces a mixture of two acidic anhydrides is Option 2 (N2O4 to NO2).

### Final Answer
The mixed anhydride of nitrogen is **Option 2: N2O4 to NO2**.

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