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Chemical Kinetics — Easy JEE chemistry MCQ

**[JEE Mains 2026]** Three experiments are running in separate vessels, following first-order kinetics with the same rate constant k: Experiment-(A): 100 ml, 10 M Experiment-(B): 200 ml, 10 M Experiment-(C): 100 ml, 10 M + 100 ml H₂O What is the correct order of rate of reaction in the above experiments?
  1. A. A > B > C
  2. B. A = B > C
  3. C. A = B = C
  4. D. C > A = B

Solution

For first-order reactions, rate = k[A]. A and B have same concentration (10 M), so same rate. In C, concentration becomes 5 M due to dilution, so lower rate. Order: A = B > C.

CHEMISTRY

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Question
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[JEE Mains 2026] Three experiments are running in separate vessels, following first-order kinetics with the same rate constant k: Experiment-(A): 100 ml, 10 M Experiment-(B): 200 ml, 10 M Experiment-(C): 100 ml, 10 M + 100 ml H₂O What is the correct order of rate of reaction in the above experiments?
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Chemical Kinetics — Easy JEE Chemistry MCQ | MyGoalPrep