What is the half-life of a reaction that has a rate constant of 280 s^-¹? A) 194 s B) 3.6 ms C) 404 ms D) Because the concentration of reactant is not given, the calculation cannot be performed. E) 2.5 ms

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Quizplus · Accepted Answer

For a first-order reaction, the half-life (t₁/₂) is calculated using the formula t₁/₂ = 0.693/k, where k is the rate constant. Substituting k = 280 s⁻¹ gives t₁/₂ = 0.693/280 s ≈ 2.5 ms.

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