Which of the following nitrate gives off different nitrogen oxide then rest of the other nitrates here?

Options

A. Lithium nitrate
B. Lead nitrate
C. Barium nitrate
D. Ammonium nitrate

Answer

To solve the question of which nitrate gives off a different nitrogen oxide than the rest, we will analyze the decomposition reactions of various nitrates.

### Step-by-Step Solution:

1. **Identify the Nitrates**: We need to consider the decomposition of the following nitrates:
- Lithium nitrate (LiNO3)
- Lead nitrate (Pb(NO3)2)
- Barium nitrate (Ba(NO3)2)
- Ammonium nitrate (NH4NO3)

2. **Decomposition of Lithium Nitrate (LiNO3)**:
- When lithium nitrate is heated, it decomposes to form:
\[ 4 \text{LiNO}_3 \rightarrow 2 \text{Li}_2\text{O} + 4 \text{NO}_2 + \text{O}_2 \]
- The nitrogen oxide produced is NO2.

3. **Decomposition of Lead Nitrate (Pb(NO3)2)**:
- Upon heating, lead nitrate decomposes to yield:
\[ 2 \text{Pb(NO}_3)_2 \rightarrow 2 \text{PbO} + 4 \text{NO}_2 + \text{O}_2 \]
- The nitrogen oxide produced is also NO2.

4. **Decomposition of Barium Nitrate (Ba(NO3)2)**:
- Barium nitrate decomposes similarly:
\[ 2 \text{Ba(NO}_3)_2 \rightarrow 2 \text{BaO} + 4 \text{NO}_2 + \text{O}_2 \]
- The nitrogen oxide produced is again NO2.

5. **Decomposition of Ammonium Nitrate (NH4NO3)**:
- When ammonium nitrate decomposes, it produces:
\[ \text{NH}_4\text{NO}_3 \rightarrow \text{N}_2\text{O} + 2 \text{H}_2\text{O} \]
- The nitrogen oxide produced here is N2O.

6. **Comparison of Products**:
- From the above reactions, we see that:
- Lithium nitrate, lead nitrate, and barium nitrate all produce NO2.
- Ammonium nitrate produces N2O.

7. **Conclusion**:
- The nitrate that gives off a different nitrogen oxide than the others is **Ammonium Nitrate (NH4NO3)**, which produces N2O instead of NO2.

### Final Answer:
The correct answer is **Ammonium Nitrate (NH4NO3)**.

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