Question on: JAMB Chemistry - 2024
Determine the half-life of a first order reaction with constant 4.5 x 10⁻³ s⁻¹.
A
154 s
B
15.4 s
C
1540 s
D
1.54 s
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Correct Option: A
The half-life (t₁/₂) of a first-order reaction is calculated using the formula:
t₁/₂ = 0.693 / k
Given k = 4.5 x 10⁻³ s⁻¹,
t₁/₂ = 0.693 / 0.0045 ≈ 154 s
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