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MHT CET 2025 Chemistry question

ChemistryChemical KineticsMHT CET 2025

Half life of a first order reaction is 3 minute. What is the time required to reduce the concentration of reactant by 90% of its initial concentration?

Answer: (C)

Solution

Rate constant . If the concentration is reduced by 90%, 10% remains, so . For a first order reaction \dfrac{2.303}{k}$ = 10 =

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Question ID VK-101189