Ch_06_summary

# Graph of a vs time is a straight line with a negative

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Unformatted text preview: of reaction o Zero-order reaction is when the rate of a reaction is independent of the concentration of a reactant: rate=k [A]0 = k. Graph of [A] vs time is a straight line, with a negative slope = rate. [A]t = [A]0 – kt. o First-order reaction is where the rate doubles when concentration doubles: rate =k [A]1. Graph of [A] against time is an exponential curve; graph of ln [A] vs. t is a straight line with a negative slope where slope = k the rate constant. Half-life of a first order reaction is a constant; t1/2=0.693/k. Integrated form of first order equation: ln ln [A]t = − kt + ln [A]0 OR ln [A]0 – ln[A]t = kt OR o [ A]0 = kt [ A]t ; [A]t = [A]0e-kt (the last two equations are given in the Data Book). o irst-order reaction is where the rate doubles when concentration doubles: rate =k [A]1. Graph of [A] against time is an...
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