Given the following initial rate data, determine the order of the reaction with respect to Cl2.
2 NO(g) + Cl2(g) -> 2 NOCl2(g)
Experiment [NO] (M) [Cl2] (M) Rate (M/s)
1 0.0300 0.0100 3.4 x 10^-4
2 0.0150 0.0100 8.5 x 10^-5
3 0.0150 0.0400 3.4 x 10^-4
a. Zeroth order b. first order c. second order d. third order