9579: Homework for X C gg Study l Guided solu x WW C smartwork.wwnorton.com /sw/

Question

9579: Homework for X C gg Study l Guided solu x WW C smartwork.wwnorton.com /sw/mod/smartwork/view.php?id 549947&is; Student 1 A reaction was run with an initial concentration of 0.15 M. The halflife at 800 K was determined to be 29400 s. The value of the half-life is independent of the initial concentration of the reactant present. What is the value of the rate constant at 800 K? Number 2.3x 10 You can find the value of rate constant from the appropriate half-life expression. Since the half-life is independent of initial concentration, the reaction is first order. C Try Again Q View Solution Dora

Explanation / Answer

whatever you got is exactly correct

he has given direct clue that is

half life is independent on the intial concentration that is possible only in first order reaction

half life equation for the first order reaction is

t1/2 = 0.693 / k

he has given the t1/2 = 29400 s

k = rate consatnt

from the above equation

k = 0.693 / t1/2

k = 0.693 / 29400

k = 2.4 x 10-5

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