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Assertion (A): The endothermic reactions...

Assertion (A): The endothermic reactions are favoured at lower temperature and the exothermic reactions are favoured at higher temperature.
Reason (R ) : when a system in equilibrium is disturbed by changing the temperature, it will tend to adjust itself so as to overcome the effect of the change.

A

If both the statements are TRUE and STATEMENT-2 is the correct explanation of STATEMENT-1

B

If both the statement are TRUE but STATEMENT-2 is NOT the correct explanation of STATEMENT-1

C

If STATEMENT-1 is TRUE and STATEMENT-2 is FALSE

D

If STATEMENT-1 is FALSE and STATEMENT-2 is TRUE

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question regarding the assertion and reason, we will analyze both statements step by step. ### Step 1: Understand the Assertion The assertion states: "The endothermic reactions are favoured at lower temperature and the exothermic reactions are favoured at higher temperature." - **Endothermic Reactions**: These reactions absorb heat (ΔH > 0). Therefore, they are favored at higher temperatures because increasing temperature provides the necessary heat for the reaction to proceed. - **Exothermic Reactions**: These reactions release heat (ΔH < 0). They are favored at lower temperatures since removing heat (by decreasing temperature) will favor the forward reaction. **Conclusion for Step 1**: The assertion is incorrect because it states that endothermic reactions are favored at lower temperatures, which is not true. ### Step 2: Understand the Reason The reason states: "When a system in equilibrium is disturbed by changing the temperature, it will tend to adjust itself so as to overcome the effect of the change." - This statement is a reflection of **Le Chatelier's Principle**, which states that if an equilibrium system is subjected to a change in conditions (like temperature), the system will adjust to counteract that change. - If the temperature is increased, the system will favor the endothermic direction (to absorb the added heat) and if the temperature is decreased, it will favor the exothermic direction (to release heat). **Conclusion for Step 2**: The reason is correct as it accurately describes the behavior of equilibrium systems when subjected to temperature changes. ### Final Conclusion - **Assertion (A)**: Incorrect - **Reason (R)**: Correct Thus, the correct answer is that the assertion is false and the reason is true. ---
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