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The decomposition of hydrogen peroxide, 2 H₂O(aq) → 2 H₂O(l) + O₂(g), follows first-order kinetics with respect to H₂O₂ and has k = 0.041 min-¹ in the rate -1 law for the decomposition of H₂O2. If the initial concentration of H₂O2 is 0.35 mol/L, what is its concentration after 42 min? Answer in units of mol/L. How much time will it take for the H₂O2 concentration to decrease from 0.5 mol/L to 0.21 mol/L? Answer in units of min.

The decomposition of hydrogen peroxide, 2 H₂O(aq) → 2 H₂O(l) + O₂(g), follows first-order kinetics with respect to H₂O₂ and has k = 0.041 min-¹ in the rate -1 law for the decomposition of H₂O2. If the initial concentration of H₂O2 is 0.35 mol/L, what is its concentration after 42 min? Answer in units of mol/L. How much time will it take for the H₂O2 concentration to decrease from 0.5 mol/L to 0.21 mol/L? Answer in units of min.

Chemistry: Principles and Reactions
Chemistry: Principles and Reactions
8th Edition
ISBN:9781305079373
Author:William L. Masterton, Cecile N. Hurley
Publisher:William L. Masterton, Cecile N. Hurley
Chapter11: Rate Of Reaction
Section: Chapter Questions
Problem 39QAP: The decomposition of azomethane, (CH3)2N2, to nitrogen and ethane gases is a first-order reaction,...
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The decomposition of hydrogen peroxide, 2 H₂O(aq) → 2 H₂O(l) + O₂(g), follows first-order kinetics with respect to H2O2 and has k = 0.041 min -1 in the rate law for the decomposition of H₂O2. If the initial concentration of H₂O2 is 0.35 mol/L, what is its concentration after 42 min? Answer in units of mol/L. How much time will it take for the H₂O₂ concentration to decrease from 0.5 mol/L to 0.21 mol/L? Answer in units of min. How much time will it take for the H₂O2 1, concentration to decrease by ? Answer in units of min. How much time will it take for the H₂O2 concentration to decrease by 83%? Answer in units of min.
Transcribed Image Text:The decomposition of hydrogen peroxide, 2 H₂O(aq) → 2 H₂O(l) + O₂(g), follows first-order kinetics with respect to H2O2 and has k = 0.041 min -1 in the rate law for the decomposition of H₂O2. If the initial concentration of H₂O2 is 0.35 mol/L, what is its concentration after 42 min? Answer in units of mol/L. How much time will it take for the H₂O₂ concentration to decrease from 0.5 mol/L to 0.21 mol/L? Answer in units of min. How much time will it take for the H₂O2 1, concentration to decrease by ? Answer in units of min. How much time will it take for the H₂O2 concentration to decrease by 83%? Answer in units of min.
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