Sulfuryl chloride decomposes according to the equation SO2Cl2(g) → SO2(g) + Cl2(g) Using the following initial-rate data, determine the order of the reaction with respect to SO2Cl2:

[SO2Cl2]0 /mol L–1 Initial rate of reaction of SO2Cl2(g) / mol L–1s–1

0.10 2.2 x 10-6

0.20 4.4 x 10-6

0.30 6.6 x 10-6

0.40 8.8 x 106

Calculate the rate constant