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JEE Main Chemistry question

ChemistryChemical KineticsJEE Main

Two substances () and () follow first order kinetics and are taken in such a way that initially . The time after which the concentration of both the substances will be equal is min. Find the value of .

Answer: 3

Solution

Let the initial concentrations be and . After 15 min, has undergone 3 half-lives: . In the same 15 min, has

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Question ID VK-144465