A particular reactant decomposes with a half‑life of 155 s155 s when its initial concentration is 0.396 M.0.396 M. The same reactant decomposes with a half‑life of 215 s215 s when its initial concentration is 0.285 M.0.285 M. Determine the reaction order. 1 2 0   What is the value and units of the rate constant for this reaction?

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Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter1: Chemical Foundations
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A particular reactant decomposes with a half‑life of 155 s155 s when its initial concentration is 0.396 M.0.396 M. The same reactant decomposes with a half‑life of 215 s215 s when its initial concentration is 0.285 M.0.285 M.
Determine the reaction order.
1
2
0
 
What is the value and units of the rate constant for this reaction?
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