Assertion : In a pair of two electrolytes one having higher value of `K_(SP)` is more soluble in water than the other having lower value of `K_(sp)`.
Reason : Solubility of electrolyte depends upon `K_(sp)` as well as on the nature of electrolyte.

Options

A. If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion.
B. If both Assertion & Reason are True but Reason is not a correct explanation of the Assertiion.
C. If Assertion is True but the Reason is False.
D. If both Assertion & Reason are False

Explanation

To solve the assertion and reason question, we will analyze both statements step by step.

### Step 1: Analyze the Assertion
**Assertion:** In a pair of two electrolytes, one having a higher value of \( K_{sp} \) is more soluble in water than the other having a lower value of \( K_{sp} \).

- **Explanation:** The solubility product constant (\( K_{sp} \)) indicates the extent to which a compound can dissolve in water. Generally, a higher \( K_{sp} \) value suggests that the compound can produce more ions in solution, which typically correlates with greater solubility.

- **Conclusion:** While this statement seems reasonable, it does not account for the stoichiometry of the dissociation of the electrolytes. For example, a compound that dissociates into multiple ions may have a lower \( K_{sp} \) but still be more soluble than a compound with a higher \( K_{sp} \) that dissociates into fewer ions.

### Step 2: Analyze the Reason
**Reason:** Solubility of electrolyte depends upon \( K_{sp} \) as well as on the nature of the electrolyte.

- **Explanation:** This statement is true. The solubility of an electrolyte is influenced not only by its \( K_{sp} \) but also by its ability to dissociate into ions (stoichiometry) and the strength of the electrolyte (strong vs. weak). Strong electrolytes dissociate completely in solution, leading to higher solubility compared to weak electrolytes that do not dissociate fully.

### Step 3: Conclusion
- The assertion is **not entirely correct** because it overlooks the importance of stoichiometry in determining solubility.
- The reason is **correct** as it accurately describes the factors affecting solubility.

### Final Answer
- The assertion is false, and the reason is true. Therefore, the correct option is that the assertion is false, but the reason is true.

---