Which of the following combination does not liberated `NH_(3)` gas?

Options

A. Heating of `NH_4ClO_4`
B. Heating of `NH_4Cl`
C. `(NH_4)_2CO_3+NaOH`
D. `Li_3N+H_2O`

Answer

To solve the question of which combination does not liberate NH3 gas, we will analyze each option provided.

### Step-by-Step Solution:

1. **Analyze Option A: Heating of NH4ClO4**
- When NH4ClO4 is heated, it decomposes into nitrogen gas (N2), chlorine gas (Cl2), oxygen gas (O2), and water (H2O).
- The balanced reaction is:
\[ 2 \text{NH}_4\text{ClO}_4 \rightarrow \text{N}_2 + \text{Cl}_2 + 2 \text{O}_2 + 4 \text{H}_2\text{O} \]
- **Conclusion**: This reaction does not produce NH3.

2. **Analyze Option B: Heating of NH4Cl**
- When NH4Cl is heated, it decomposes into ammonia (NH3) and hydrogen chloride (HCl).
- The balanced reaction is:
\[ \text{NH}_4\text{Cl} \rightarrow \text{NH}_3 + \text{HCl} \]
- **Conclusion**: This reaction liberates NH3.

3. **Analyze Option C: NH4CO3 with NaOH**
- When ammonium carbonate (NH4)2CO3 reacts with sodium hydroxide (NaOH), it produces ammonia (NH3), sodium carbonate (Na2CO3), and water (H2O).
- The balanced reaction is:
\[ \text{(NH}_4)_2\text{CO}_3 + 2 \text{NaOH} \rightarrow 2 \text{NH}_3 + \text{Na}_2\text{CO}_3 + 2 \text{H}_2\text{O} \]
- **Conclusion**: This reaction liberates NH3.

4. **Analyze Option D: Li3N with H2O**
- When lithium nitride (Li3N) reacts with water (H2O), it produces lithium hydroxide (LiOH) and ammonia (NH3).
- The balanced reaction is:
\[ \text{Li}_3\text{N} + 3 \text{H}_2\text{O} \rightarrow 3 \text{LiOH} + \text{NH}_3 \]
- **Conclusion**: This reaction liberates NH3.

### Final Conclusion:
After analyzing all options, we find that **Option A (Heating of NH4ClO4)** is the only combination that does not liberate NH3 gas.

### Answer:
**Option A: Heating of NH4ClO4 does not liberate NH3 gas.**