Sodium carbonate, which is one of the most important products of the chemical industry, is prepared by the Solvay process based on the interaction of sodium chloride with ammonia and carbon dioxide. The reaction yeilds

Options

A. `NH_(4)HCO_(3)`
B. `NH_(4)Cl`
C. `NaHCO_(3)`
D. `(NH_(4))_(2)CO_(3)`

Answer

To solve the question regarding the preparation of sodium carbonate through the Solvay process, we can break it down into a series of steps.

### Step-by-Step Solution:

1. **Understanding the Solvay Process**: The Solvay process is a method for producing sodium carbonate (Na2CO3) from sodium chloride (NaCl), ammonia (NH3), and carbon dioxide (CO2).

2. **First Reaction**: The first step involves the reaction of ammonia with carbon dioxide in the presence of water. This reaction produces ammonium carbonate ((NH4)2CO3):
\[ \text{NH}_3 + \text{CO}_2 + \text{H}_2\text{O} \rightarrow (NH_4)_2CO_3 \]

3. **Formation of Ammonium Hydrogen Carbonate**: The ammonium carbonate can further react with carbon dioxide and water to form ammonium hydrogen carbonate (NH4HCO3):
\[ (NH_4)_2CO_3 + CO_2 + H_2O \rightarrow 2NH_4HCO_3 \]

4. **Reaction with Sodium Chloride**: The next step involves the reaction of ammonium hydrogen carbonate with sodium chloride (NaCl). This reaction produces sodium bicarbonate (NaHCO3) and ammonium chloride (NH4Cl):
\[ NH_4HCO_3 + NaCl \rightarrow NaHCO_3 + NH_4Cl \]

5. **Formation of Sodium Carbonate**: The sodium bicarbonate (NaHCO3) produced can then be heated to form sodium carbonate (Na2CO3):
\[ 2NaHCO_3 \rightarrow Na_2CO_3 + CO_2 + H_2O \]

6. **Final Product**: Therefore, the main product of the reaction when sodium chloride interacts with ammonia and carbon dioxide through the Solvay process is sodium bicarbonate (NaHCO3), which can subsequently be converted into sodium carbonate (Na2CO3).

### Conclusion:
The reaction yields sodium bicarbonate (NaHCO3) when sodium chloride reacts with ammonia and carbon dioxide.