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Assertion (A) Rate constant determined...

Assertion (A) Rate constant determined form Arrhenius equations are fairly accurate for simple as well as complex molecules.
Reason (R) Reatant molecules undergo chemical irrespective of their orientation during collison.

A

Both assertion and reason are correct and the reason in correct explanation of assertion.

B

Both assertaion and reason are correct, but the reason does not explain essertion

C

Assertion is correct but reason is incorrect

D

Both assertion and reason are incrrect.

Text Solution

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The correct Answer is:
To solve the assertion and reason question, we will analyze both the assertion (A) and the reason (R) separately. ### Step 1: Analyze the Assertion (A) The assertion states that "Rate constant determined from Arrhenius equations are fairly accurate for simple as well as complex molecules." - The Arrhenius equation is given by: \[ k = A e^{-\frac{E_a}{RT}} \] where: - \( k \) = rate constant - \( A \) = pre-exponential factor - \( E_a \) = activation energy - \( R \) = universal gas constant - \( T \) = temperature in Kelvin - The assertion is true because the Arrhenius equation can be applied to both simple and complex reactions to determine the rate constant. It takes into account the activation energy and temperature, which are critical factors in chemical kinetics. ### Step 2: Analyze the Reason (R) The reason states that "Reactant molecules undergo chemical change irrespective of their orientation during collision." - This statement is not accurate. For a chemical reaction to occur, reactant molecules must collide with the correct orientation and sufficient energy. The proper orientation allows the necessary bonds to break and form during the reaction. - Therefore, the reason is incorrect because it overlooks the importance of molecular orientation in chemical reactions. ### Conclusion Based on the analysis: - The assertion is correct. - The reason is incorrect. Thus, the correct answer is that the assertion is true, but the reason is false. ### Final Answer Assertion (A) is correct, and Reason (R) is incorrect. ---
To solve the assertion and reason question, we will analyze both the assertion (A) and the reason (R) separately. ### Step 1: Analyze the Assertion (A) The assertion states that "Rate constant determined from Arrhenius equations are fairly accurate for simple as well as complex molecules." - The Arrhenius equation is given by: \[ k = A e^{-\frac{E_a}{RT}} ...
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