Which of the follwing group of chemicals, in additon to water, are used for the manufactire of `Na_(2)CO_(3)` by Solvay process

Options

A. `NaCl, CO` and `NH_(3)`
B. `NaCl,CO_(2)` and `NH_(3)`
C. `NaCl, NH_(4)Cl` and `CO_(2)`
D. `NaHCO_(3),CO` and `NH_(3)`

Explanation

To solve the question regarding the chemicals used in the manufacture of Na₂CO₃ (sodium carbonate) by the Solvay process, we can break down the process into several steps:

### Step-by-Step Solution:

1. **Understanding the Solvay Process**:
The Solvay process is a method for producing sodium carbonate from sodium chloride (NaCl), ammonia (NH₃), and carbon dioxide (CO₂).

2. **Identify the Reactants**:
In addition to water (H₂O), the main chemicals involved in the Solvay process are:
- Ammonia (NH₃)
- Carbon Dioxide (CO₂)
- Sodium Chloride (NaCl)

3. **Chemical Reactions**:
- The first reaction involves ammonia and water reacting with carbon dioxide to form ammonium bicarbonate:
\[ NH₃ + H₂O + CO₂ \rightarrow NH₄HCO₃ \]
- Next, when sodium chloride is introduced, it reacts with ammonium bicarbonate to produce sodium bicarbonate and ammonium chloride:
\[ NH₄HCO₃ + NaCl \rightarrow NaHCO₃ + NH₄Cl \]
- The sodium bicarbonate is then heated to produce sodium carbonate, water, and carbon dioxide:
\[ 2 NaHCO₃ \rightarrow Na₂CO₃ + H₂O + CO₂ \]

4. **Conclusion**:
From the above reactions, we can conclude that the additional chemicals used in the Solvay process, besides water, are:
- Sodium Chloride (NaCl)
- Ammonium Chloride (NH₄Cl)
- Carbon Dioxide (CO₂)

Thus, the correct answer to the question is:
**NaCl, NH₄Cl, and CO₂**.