The reaction SO2CI2(g) SO2(g) + CI2(g) is first order in SO2Cl2.Using the following kinetic data, determine

Question:

The reaction
SO2CI2(g) → SO2(g) + CI2(g)
is first order in SO2Cl2.Using the following kinetic data, determine the magnitude and units of the first-order rate constant:
Time (s) Pressure SO2CI2 (atm)
0..........................1.000
2, 500....................0.947
5, 000....................0.895
7, 500....................0.848
10, 000...................0.803