NEETChemistry-Chemical Kinetics
NEET Chemistry First Order Reactions MCQ Question
Type: MCQ-numerical-Medium-Class 12
What will be the half-life of the first order reaction for which the value of rate constant is 200 s⁻¹?
A
46 × 10⁻² s
B
46 × 10⁻³ s
C
26 × 10⁻² s
D
26 × 10⁻³ s
Correct Answer
Option A
Detailed Explanation
The half-life of a first-order reaction is given by t₁/₂ = 0.693/k. Substituting the given rate constant (k = 200 s⁻¹) gives t₁/₂ = 3.46 × 10⁻² s.
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