# Problem: A particular reactant decomposes with a half-life of 149 s when its initial concentration is 0.309 M. The same reactant decomposes with a half-life of 243 s when its initial concentration is 0.189 M. Determine the reaction order. What is the value and unit of the rate constant for this reaction?

###### FREE Expert Solution
84% (398 ratings)
###### Problem Details

A particular reactant decomposes with a half-life of 149 s when its initial concentration is 0.309 M. The same reactant decomposes with a half-life of 243 s when its initial concentration is 0.189 M.

Determine the reaction order.

What is the value and unit of the rate constant for this reaction?