CUET · CHEMISTRY · PYQ PAPER 2025
Arrange the following in the increasing order of rate of the second order reaction Reactants → products
(A) Reaction at 298 K
(B) Reaction at 298 K with catalyst
(C) Reaction at 500 K with catalyst and double the initial concentration of reactant
(D) Reaction at 500 K with double the initial concentration of reactant
Choose the correct answer from the options given below:
- A (A), (B), (D), (C)
- B (A), (B), (C), (D)
- C (D), (B), (C), (A)
- D (A), (C), (D), (B)
Answer & Solution
Correct Answer
(A) (A), (B), (D), (C)
Step-by-step Solution
Detailed explanation
Rate \( = k [A]^2 \). Rate constants order: \( k_{298} \( \text{Rate}_{(A)} = k_{298} C^2 \). \( \text{Rate}_{(B)} = k_{298, \text{cat}} C^2 \). \( \text{Rate}_{(D)} = k_{500} (2C)^2 = 4 k_{500} C^2 \).…
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