lec 5 chem 6c

# lec 5 chem 6c - Review Cathodic Protection Electrolysis...

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Review: Cathodic Protection Electrolysis Chemical Kinetics Rates of decomposition and formation Total reaction rates

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Preview Integrated Rate Laws Half-Life Reactions Determine Complex Rates Reaction Intermediate Rate Determining Step
Thus far we have determined how the reaction progresses with time: Rate = k [X] a But how can we use this to determine the [X] after a given amount of time has passed?

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Integrated Rate Laws Assuming a 1 st order reaction for the following: X Y + Z We have already seen that the rate of decomposition of X will be: -d[X] dt = k[X] After integration we can rearrange to obtain: ln = -kt or [X] t = [X] o e -kt [X] t [X] o 1 st order integrated rate law
ln = -kt [X] t [X] o Starting with the first equation: ln[X] t = -kt + ln[X] o y = mx + b

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line, the reaction is 1 st order and the slope is the negative of the rate constant. This plot is the usual way of determining the reaction order as well as the rate constant. (If a straight line is obtained it is 1
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lec 5 chem 6c - Review Cathodic Protection Electrolysis...

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