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When KOH is dissolved in water, heat is ...

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

A

Increases

B

Decreases

C

Remains the same

D

Cannot be predicted

Text Solution

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The correct Answer is:
To solve the question regarding the solubility of KOH when it is dissolved in water and the temperature is raised, we can follow these steps: ### Step 1: Understand the nature of the dissolution of KOH When KOH is dissolved in water, it releases heat, indicating that the dissolution process is exothermic. This means that the enthalpy change (ΔH) for the dissolution of KOH is negative. ### Step 2: Apply Le Chatelier's Principle 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 an exothermic reaction, increasing the temperature will shift the equilibrium to favor the reactants (the backward direction). ### Step 3: Analyze the effect of temperature on solubility Since the dissolution of KOH is exothermic, raising the temperature will shift the equilibrium towards the reactants. This means that less KOH will dissolve in water at higher temperatures, resulting in decreased solubility. ### Step 4: Conclusion Based on the analysis, when the temperature is raised, the solubility of KOH decreases. ### Final Answer The solubility of KOH when the temperature is raised decreases. ---
To solve the question regarding the solubility of KOH when it is dissolved in water and the temperature is raised, we can follow these steps: ### Step 1: Understand the nature of the dissolution of KOH When KOH is dissolved in water, it releases heat, indicating that the dissolution process is exothermic. This means that the enthalpy change (ΔH) for the dissolution of KOH is negative. ### Step 2: Apply Le Chatelier's Principle 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 an exothermic reaction, increasing the temperature will shift the equilibrium to favor the reactants (the backward direction). ...
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