O 2/24/2017 11:55 PM A 23.2/100 Gradebook te Print Calculator Periodic Table Que

Question

O 2/24/2017 11:55 PM A 23.2/100 Gradebook te Print Calculator Periodic Table Question 5 of 12 Map EA Sapling Learning launch text for screen reader articular reactant decomposes with a half-life of 153 s when its initial concentration is 0.311 M. Tne same reactant decomposes with a half-life of 211 s when its initial concentration is 0.226 M. Determine the reaction order. What is the value and unit of the rate constant for this reaction? Number Select answer A Previous 30 Give Up & View solution Check Answer Next Exit 8 Hint

Explanation / Answer

from the given date it is clear that half life is inversly proportional to initial concentration

so reaction is second order

for second order reaction

order = 2

K = 1 / t1/2[A0]

K = 1 / 153(0.311)

K = 1 / 47.583

K = 0.021 M-1 s-1

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