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MHT CET Chemistry question

ChemistryChemical KineticsMHT CET

The reaction, Product follows first order kinetics. In 40 minutes the concentration of X changes from 0.1 M to 0.025 M. Then the rate of reaction when concentration of X is 0.01 M will be [AIEEE 2012]

Answer: (C)

Solution

0.1 M to 0.025 M is two half-lives, so min and ; rate

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Question ID VK-069097