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Assertion (A) : The equilibrium constant...

Assertion (A) : The equilibrium constant is fixed and characteristic for any given chemical reaction at a specified temperature.
Reason (R) : The composition of the final equilibrium mixture at a particular temperature depends upon the starting amount of reactants.

A

If both (A) and (R) are correct, and (R) is the correct explanation for (A)

B

If both (A) and (R) are correct, but (R) is not the correct explanation of (A)

C

If (A) is correct, but (R) is incorrect

D

If (A) is incorrect, but (R) is correct.

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: Analyze the Assertion (A) **Assertion (A):** The equilibrium constant is fixed and characteristic for any given chemical reaction at a specified temperature. - The equilibrium constant (K) for a reaction is defined based on the concentrations of the reactants and products at equilibrium. For a general reaction of the form: \[ aA + bB \rightleftharpoons cC + dD \] The equilibrium constant \( K_c \) is given by: \[ K_c = \frac{[C]^c[D]^d}{[A]^a[B]^b} \] - This expression is indeed fixed for a given reaction at a specific temperature. If the temperature changes, the value of the equilibrium constant will also change. Therefore, the assertion is **true**. ### Step 2: Analyze the Reason (R) **Reason (R):** The composition of the final equilibrium mixture at a particular temperature depends upon the starting amount of reactants. - The composition of the equilibrium mixture is determined by the equilibrium constant. While the initial amounts of reactants may affect the time it takes to reach equilibrium, they do not affect the value of the equilibrium constant itself. - Regardless of the starting amounts, the system will adjust to reach the same equilibrium concentrations dictated by the equilibrium constant. Thus, the reason is **false**. ### Conclusion From the analysis: - Assertion (A) is **true**. - Reason (R) is **false**. Therefore, the correct option is that Assertion (A) is correct and Reason (R) is incorrect. ### Final Answer Assertion (A) is true, and Reason (R) is false. ---
To solve the question regarding the assertion and reason, we will analyze both statements step by step. ### Step 1: Analyze the Assertion (A) **Assertion (A):** The equilibrium constant is fixed and characteristic for any given chemical reaction at a specified temperature. - The equilibrium constant (K) for a reaction is defined based on the concentrations of the reactants and products at equilibrium. For a general reaction of the form: \[ aA + bB \rightleftharpoons cC + dD ...
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