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  • Assertion (A): For any chemical reaction at a particular temperature, the equilibrium constant is fixed and is a characteristic property. Reason (R): Equilibrium constant is independent of temperature.

In the following question, a statement of Assertion (A) followed by a statement of Reason (R) is given. Choose the correct option out of the choices given below each question.

Assertion (A): For any chemical reaction at a particular temperature, the equilibrium constant is fixed and is a characteristic property.

Reason (R): Equilibrium constant is independent of temperature.

(i) Both A and R are true, and R is the correct explanation of A

(ii) Both A and R are true, but R is not the correct explanation of A.

(iii) A is true, but R is false

(iv) Both A and R are false. 

Answers (1)

The answer is the option (iii) A is true, but R is false.

Explanation: The equilibrium constant for an exothermic reaction (negative H) decreases as the temperature increases. The equilibrium constant for an endothermic reaction (positive H) increases as the temperature increases.

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