Concerning reaction $2NOCl(g)\longrightarrow 2NO(g) +Cl_2(g)$ following measures have been made:
| $t$ | $[NOCl](M)$ | $ln[NOCl]$ | $\frac{1}{[NOCl]}$ |
| 0 | 0.0250 | -3.69 | 40.0 |
| 200 | 0.0202 | -3.90 | 49.5 |
| 400 | 0.0169 | -4.08 | 59.2 |
| 700 | 0.0136 | -4.30 | 73.5 |
| 900 | 0.0120 | -4.42 | 83.3 |
Find on a graph the order of this reaction with respect to $NOCl$!
As $\frac{1}{[NOCl]}=f(t)$ is linear, the reaction is second order with respect to $NOCl$!