1372 Lec 20Oct2011

1372 Lec 20Oct2011 - 1 General Chemistry 4th edition, Hill,...

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General Chemistry 4 th edition, Hill, Petrucci, McCreary, Perry 1
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General Chemistry 4 th edition, Hill, Petrucci, McCreary, Perry 5 First-Order Reactions In a first-order reaction , the exponent in the rate law is 1. Rate = k [A] 1 = k [A] ln [A] t ln [A] 0 = kt ln [A] t = kt + ln [A] 0 A first-order reaction is a straight line on a plot of ln [A] vs time…… The integrated rate law describes the concentration of a reactant as a function of time. For a first-order process: ln [A] t [A] 0 = – kt
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General Chemistry 4 th edition, Hill, Petrucci, McCreary, Perry 6 Decomposition of H 2 O 2
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General Chemistry 4 th edition, Hill, Petrucci, McCreary, Perry 7 Example 13.4 For the first-order decomposition of H 2 O 2 (aq), given k = 3.66 x 10 –3 s –1 and [H 2 O 2 ] 0 = 0.882 M, determine (a) the time at which [H 2 O 2 ] = 0.600 M and (b) [H 2 O 2 ] after 225 s.
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1372 Lec 20Oct2011 - 1 General Chemistry 4th edition, Hill,...

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