NEET Chemistry Half-life of Reactions MCQ Question
In a first order reaction, the concentration of reactant is reduced to 1/8 of the initial concentration in 75 minutes at 298 K. What is the half-life period of the reaction in minutes?
50 min.
15 min.
30 min.
25 min.
Correct Answer
Detailed Explanation
For a first order reaction, the concentration reduces to 1/8 in 3 half-lives. Therefore, 3t₁/₂ = 75 min, so t₁/₂ = 25 min.
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