Preparation of `Na_(2)CO_(3)` extract is made for acid radical analysis because

Options

A. All anions react with Na to give water soluble compound
B. Na is more reactive
C. `Na_(2)CO_(3)` is water soluble
D. None of the above

Answer

### Step-by-Step Solution:

1. **Understanding Sodium Carbonate Extract**: Sodium carbonate (Na₂CO₃) extract, commonly referred to as soda extract, is prepared for the analysis of acid radicals in qualitative inorganic salt analysis.

2. **Purpose of Preparation**: The primary purpose of preparing a sodium carbonate extract is to dissolve the anions present in the mixture that are otherwise insoluble in the presence of certain cations (basic radicals).

3. **Solubility of Anions**: When sodium carbonate is added to the mixture, it reacts with the anions to form water-soluble compounds. This is crucial because it allows for the identification and analysis of these anions in the solution.

4. **Removal of Interfering Radicals**: The preparation of the sodium carbonate extract also helps in removing basic radicals, especially those that are colored, which could interfere with the tests for acidic radicals. This ensures that the tests for acid radicals are accurate and reliable.

5. **Reactivity of Sodium**: Sodium is a highly reactive element, and when it forms compounds with the anions in the mixture, it helps in the formation of soluble salts. This is a key reason why sodium carbonate is used for this purpose.

6. **Conclusion**: Thus, the preparation of sodium carbonate extract is essential for acid radical analysis because it effectively dissolves insoluble anions, removes interfering basic radicals, and allows for the accurate identification of the acid radicals present in the sample.