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MHT CET Chemistry question

ChemistryChemical KineticsMHT CET

In a first order reaction, the concentration of the reactant, decreases from 0.8 M to 0.4 M in 15 minutes. The time taken for the concentration to change from 0.1 M to 0.025 M is [AIEEE 2004]

Answer: (C)

Solution

Half-life = 15 min; 0.1 M to 0.025 M is a fall to one quarter, i.e. two half-lives =

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Question ID VK-069102