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MHT CET 2022 Chemistry question

ChemistryChemical KineticsMHT CET 2022

What is rate constant of a first order reaction if time required to decrease concentration of reactant from 1.6 M to 0.4 M is 12 hour?

Answer: (A)

Solution

For a first order reaction . Here M, M and h, so . Then . This matches option (A).

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Question ID VK-094261