Why `NH_(3)` gas cannot be dried by passing over `P_(2)O_(5),CaCl_(2)` and `H_(2)SO_(4)` ?

Explanation

To understand why ammonia gas (NH₃) cannot be dried by passing it over P₂O₅, CaCl₂, and H₂SO₄, we need to analyze the chemical properties and reactions involved with these drying agents.

### Step-by-Step Solution:

1. **Understanding Ammonia (NH₃)**:
- Ammonia is a basic gas. It can react with acids to form salts.

2. **P₂O₅ as a Drying Agent**:
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