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remember when given a table with the concentration of reactants and rates of different reactions, the order can be found by setting up a ratio of the concentration from (ex.) (Conc. Experiment 1 / Conc. Experiment 2)^n = (Rate Experiment 1 / Rate Experiment 2). Remember that the variables that represent order are applied to the concentration, not the experimental rates! Hope this helps.
805097738 wrote:Alison Trinh 1E wrote:n represents the order of the reactant, which in turn gives insight into the mechanism of the reaction.
how do you know what the order is
The order refers to the sum of all the exponents of the concentrations in the rate law. For example, if the rate law was rate=kr[A]^2[B]^3, the overall order would be 5. However, it is important to keep in mind that the order of each individual species only refers to that species’ specific coefficient and is therefore different (unless it’s the only reactant affecting the rate).
For kinetics, n is the exponent that a concentration is raised to in a rate law, the sum of these exponents is the overall order of the reaction. In the homework problems you can find n based off of given experimental data that shows the variation of rates with concentrations of reactants.
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