The reaction (CH3),CBr + OH → (CH3),COH + Br in a certain solvent is first order with respect to (CH3);CBr and zero order with respect to OH-. In several experiments, the rate constant k was determined at different temperatures. A plot of In(k) versus 1/T was constructed resulting in a straight line with a slope value of -1.10 × 104 K and y-intercept of 33.5. Assume k has units of s1. a. Determine the activation energy for this reaction. b. Determine the value of the frequency factor A. c. Calculate the value of k at 25°C.

The reaction (CH3),CBr + OH → (CH3),COH + Br in a certain solvent is first order with respect to (CH3);CBr and zero order with respect to OH-. In several experiments, the rate constant k was determined at different temperatures. A plot of In(k) versus 1/T was constructed resulting in a straight line with a slope value of -1.10 × 104 K and y-intercept of 33.5. Assume k has units of s1. a. Determine the activation energy for this reaction. b. Determine the value of the frequency factor A. c. Calculate the value of k at 25°C.

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter30: Kinetic Methods Of Analysis

Section: Chapter Questions

Problem 30.17QAP

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A drug decomposes in the blood by a first-order process. A pill containing 0.500 g of the active ingredient reaches its maximum concentration of 2.5 mg/ 100 mL of blood. If the half-life of the active ingredient is 75 min, what is its concentration in the blood 2.0 h after the maximum concentration has been reached?
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