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KMU MDCAT 2024 Chemistry #Chemical Kinetics #Rate Constant

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For a first order reaction A → B, the rate constant is 0.0458 s⁻¹. Calculate rate of the reaction if the concentration of reactant is 0.35 mol dm⁻³. (KMU MDCAT 2024)

Verified Answer & Explanation⌄

Correct Answer: C) 0.016 mol dm⁻³ s⁻¹

Concept Explanation

For a first-order reaction, rate = k[A] = (0.0458 s⁻¹)(0.35 mol dm⁻³) = 0.0160 mol dm⁻³ s⁻¹.

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