Chemistry
Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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7. Gaseous nitrogen dioxide decomposes as follows: 2NO2(g) → 2NO(g) + O2(g)
Experimental data for this reaction at 330 °C is plotted below.
400
350
300
250
200
y = 0.775x + 99.786
R2 = 1
150
100
50
50
100
150
200
250
300
350
400
Time (s)
a) What is the rate constant at 330 C? (Don't forget the units!)
K = 0.775 M' s'!
b) Write the rate law for this reaction (including the rate constant with units).
Rate= 0.775 M' s' [NO2]?
c) Calculate the half-life of NO2 at 330 °C.
129 s
d) Calculate the concentration of NO2 after 215 seconds.
e) Calculate the concentration of each of the products of the reaction after 215
seconds.
1/[NO2] (L mol-1)
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Transcribed Image Text:7. Gaseous nitrogen dioxide decomposes as follows: 2NO2(g) → 2NO(g) + O2(g) Experimental data for this reaction at 330 °C is plotted below. 400 350 300 250 200 y = 0.775x + 99.786 R2 = 1 150 100 50 50 100 150 200 250 300 350 400 Time (s) a) What is the rate constant at 330 C? (Don't forget the units!) K = 0.775 M' s'! b) Write the rate law for this reaction (including the rate constant with units). Rate= 0.775 M' s' [NO2]? c) Calculate the half-life of NO2 at 330 °C. 129 s d) Calculate the concentration of NO2 after 215 seconds. e) Calculate the concentration of each of the products of the reaction after 215 seconds. 1/[NO2] (L mol-1)
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