Describe the principle of Solvay process used for the manufacture of sodium carbonate.

Explanation

### Step-by-Step Text Solution for the Solvay Process

1. **Introduction to Sodium Carbonate Production**:
- Sodium carbonate (Na2CO3) is industrially manufactured using the Solvay process, which involves several chemical reactions and steps.

2. **Formation of Ammonium Carbonate**:
- The process begins by passing ammonia (NH3) through a solution of carbon dioxide (CO2) in water. This reaction occurs in an apparatus known as the ammonia absorption tower.
- The reaction can be represented as:
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