When KOH is dissolved in water, heat is evolved. If the temperature is raised, the solunility of KOH

Options

A. Increases
B. Decreases
C. Remains the same
D. Cannot be predicted

Explanation

To solve the question regarding the solubility of KOH when dissolved in water and the effect of temperature on it, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Nature of the Dissolution Process**:
- When KOH (potassium hydroxide) is dissolved in water, it releases heat. This indicates that the dissolution process is exothermic. In an exothermic reaction, heat is released to the surroundings.

2. **Understand the Effect of Temperature on Exothermic Reactions**:
- According to Le Chatelier's principle, if a system at equilibrium is subjected to a change in temperature, the equilibrium will shift in a direction that counteracts the change. For exothermic reactions, increasing the temperature will shift the equilibrium to favor the reactants, thereby reducing the solubility of the solute.

3. **Apply the Concept to KOH**:
- Since the dissolution of KOH is exothermic, raising the temperature will decrease the solubility of KOH in water. This means that less KOH will dissolve in water at higher temperatures.

4. **Conclusion**:
- Therefore, the correct answer to the question is that the solubility of KOH decreases when the temperature is raised.

### Final Answer:
The solubility of KOH decreases when the temperature is raised (Option 2).

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