2/7/2018 11:30 PM6.8/15 () 2/7/2018 05:10 PM Gradebook Print @ Calculator Penodc

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2/7/2018 11:30 PM6.8/15 () 2/7/2018 05:10 PM Gradebook Print @ Calculator Penodc Table Question 7 of 11 Map Sapling Learing A reactant decomposes with a halt-life of 141 s when its initial concentration is 0.389 M. When the initial concentration is 0.686 M, this same reactant decomposes with the same hall-life of 141s What is the order of the reaction? What is the value and unit of the rate constant for this reaction? Select answer There is a hint available View the divider bar again to hide he hint - F6 3 4 5 7 9 W AF

Explanation / Answer

From the data half-life of the reaction doesn't depend upon the initial concentration of the reactants so it is a first order reaction.

For first order reactions rate constant,K= 0.693/ half-life

K= 0.693/141 s

K= 4.91*10^-3 s^-1

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