Time (s) Concentration (M) [N 2 O 5 ] [NO 2 ] [O 2 ] 0 0.0200 0.0000 0.0000 100
ID: 679118 • Letter: T
Question
Time (s)
Concentration (M)
[N2O5]
[NO2]
[O2]
0
0.0200
0.0000
0.0000
100
0.0169
0.0063
0.0016
200
0.0142
0.0115
0.0029
300
0.0120
0.0160
0.0040
400
0.0101
0.0197
0.0049
500
0.0086
0.0229
0.0057
600
0.0072
0.0256
0.0064
700
0.0061
0.0278
0.0070
a)For the reaction given above, express the rate of reaction interms of each reactant and product.
b)Calculate the average rate of formation of O2during the time interval from 300 s to 600 s.
Time (s)
Concentration (M)
[N2O5]
[NO2]
[O2]
0
0.0200
0.0000
0.0000
100
0.0169
0.0063
0.0016
200
0.0142
0.0115
0.0029
300
0.0120
0.0160
0.0040
400
0.0101
0.0197
0.0049
500
0.0086
0.0229
0.0057
600
0.0072
0.0256
0.0064
700
0.0061
0.0278
0.0070
Explanation / Answer
We Know that : The given reaction is : 2 N2O5 (g) 4 NO2 (g) +O2 (g) Rate of the reaction = -1 / 2 d [ N2 O5 ] / dt = + 1 / 4 d [ NO2 ] / dt = + d [ O2] / dt Average Rate of Formation of O2 is : [0.0064 - 0.0040 ] / 600 - 300 = 0.000008 M/ s Average rate of decompopsition of N2O5 is : [ 0.0072 - 0.0120 ] M / 600 - 300s = - 0.000016 M / sRelated Questions
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