`NH_(3)` gas does not liberate by which of the following combination?

Options

A. Heating of `NH_(4)ClO_(4)`
B. Heating of `NH_(4)Cl`
C. `(NH_(4))_(2)CO_(3)+NaOH`
D. `Li_(3)N+H_(2)O`

Explanation

To determine which combination does not liberate ammonia gas (NH₃), we will analyze each provided combination step by step.

### Step 1: Analyze the first combination - Heating NH₄ClO₄
- **Reaction**: When ammonium perchlorate (NH₄ClO₄) is heated, it decomposes.
- **Products**: The decomposition produces nitrogen gas (N₂), chlorine gas (Cl₂), oxygen gas (O₂), and water vapor (H₂O).
- **Conclusion**: Ammonia gas (NH₃) is **not** produced in this reaction.

### Step 2: Analyze the second combination - Heating NH₄Cl
- **Reaction**: When ammonium chloride (NH₄Cl) is heated, it undergoes sublimation.
- **Products**: The products of this reaction are ammonia gas (NH₃) and hydrochloric acid (HCl).
- **Conclusion**: Ammonia gas (NH₃) **is** liberated in this reaction.

### Step 3: Analyze the third combination - NH₄₂CO₃ + NaOH
- **Reaction**: When ammonium carbonate (NH₄₂CO₃) reacts with sodium hydroxide (NaOH), a double displacement reaction occurs.
- **Products**: The products are sodium carbonate (Na₂CO₃), ammonia gas (NH₃), and water (H₂O).
- **Conclusion**: Ammonia gas (NH₃) **is** liberated in this reaction.

### Step 4: Analyze the fourth combination - Li₃N + H₂O
- **Reaction**: When lithium nitride (Li₃N) reacts with water (H₂O), it produces lithium hydroxide (LiOH).
- **Products**: The reaction also produces ammonia gas (NH₃).
- **Conclusion**: Ammonia gas (NH₃) **is** liberated in this reaction.

### Final Conclusion
Among the combinations analyzed, the only combination that does **not** liberate ammonia gas (NH₃) is:
- **Heating NH₄ClO₄ (Ammonium perchlorate)**.

Thus, the correct answer is the first option: **Heating NH₄ClO₄ does not liberate ammonia gas.**

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