`CaCl_(2)+Na_(2)SO_(4)to`No reaction

Options

A. For precipitate formation reaction
B. For precipitate dissolution reaction
C. For precipitate exchange reaction
D. For no reaction

Answer

To solve the question regarding the reaction between calcium chloride (CaCl₂) and sodium sulfate (Na₂SO₄) resulting in "no reaction," we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Reactants**: The reactants given are calcium chloride (CaCl₂) and sodium sulfate (Na₂SO₄).

2. **Understand the Nature of the Reactants**:
- Calcium chloride is a soluble salt that dissociates in water to form Ca²⁺ and Cl⁻ ions.
- Sodium sulfate is also a soluble salt that dissociates in water to form Na⁺ and SO₄²⁻ ions.

3. **Consider Possible Reactions**: When these two salts are mixed in an aqueous solution, we can look for possible double displacement reactions, where the cations and anions exchange partners.

4. **Write the Possible Products**: The possible products from the double displacement could be:
- Calcium sulfate (CaSO₄)
- Sodium chloride (NaCl)

5. **Check Solubility of the Products**:
- Calcium sulfate (CaSO₄) is only slightly soluble in water, and it can precipitate out of the solution.
- Sodium chloride (NaCl) is highly soluble in water.

6. **Evaluate the Reaction**:
- In the case of CaCl₂ and Na₂SO₄, while one might expect a reaction to occur, the formation of a precipitate (CaSO₄) does not happen significantly under normal conditions because the solubility product does not favor precipitation in this scenario.
- Therefore, no significant reaction occurs, and we conclude that the reaction results in "no reaction."

7. **Final Conclusion**: Since no observable reaction occurs between CaCl₂ and Na₂SO₄, we conclude that the answer is indeed "no reaction."