| [NO2] | Time (mins) |
| 0.350 M | 0 |
| 0.245 M | 4 |
| 0.190 M | 8 |
| 0.130 M | 16 |
| 0.090 M | 24 |
| 0.062 M | 40 |
To determine the rate of the reaction we first plot the data with [NO2] on the y-axis and time on the x-axis. The initial rate is obtained by determining the slope of the line tangent to t=0 on the graph. Notice in Experiment #1 the initial rate is 3.4 x 10-2 M/min.