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Lesson_26-_Example_Solutions-_2009_

# Lesson_26-_Example_Solutions-_2009_ - Lesson 26 Example...

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Lesson 26 Example 26-1 If concentration is measured in mol/L and time in seconds, what are the units of the rate constants, k , for the following reactions: a) 1 st order reaction, b) 2 nd order reaction. ____________________________________________________________________________________________ Solution: a) 1 st order reaction r = k[A] [ ] s 1 mol L s L mol A r k = = = b) 2 nd order reaction r = k[A] 2 or r =k [A][B] 1

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Lesson 26 [ ] s mol L mol L s L mol A r k 2 2 = = = 2
Example 26-2 Using the data below, obtain the rate law for the decomposition of N 2 O 5 , using a differential rate law. N 2 O 5 2 NO 2 + ½ O 2 time (s) [N 2 O 5 ] (M) 0 1 200 0.88 400 0.78 600 0.69 800 0.61 1000 0.54 1200 0.48 1400 0.43 1600 0.38 1800 0.34 2000 0.30 Solution: If the reaction is 1 st order, i.e. 3

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Lesson_26-_Example_Solutions-_2009_ - Lesson 26 Example...

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