A student monitors the concentration of reactant X during a reaction. The data are shown below.
Time (min): 0.0 1.0 2.0 3.0
[X] (M): 0.120 0.098 0.085 0.080
For which one-minute interval is the average rate of disappearance of X greatest?
a) 1.0–2.0 min
b) 0.0–1.0 min
c) 2.0–3.0 min
d) The rate is the same in all three intervals.