CHEMISTRY · Single correct · AP · Chemistry · Kinetics · Kinetics
Problem
The reaction 2NO2(g)→2NO(g)+O2(g) is studied at a constant temperature. The concentration of NO2 changes as follows:
Time (s): 0 30 60
[NO2] (M): 0.400 0.320 0.280
What is the ratio of the average rate of appearance of O2 during the first 30 s to that during the second 30 s?
(a) 1.0
(b) 2.0
(c) 0.50
(d) 4.0