Question

The reaction:

SO2Cl2 (g) yields SO2 (g) + Cl2 (g)

The reaction is first order in SO2Cl2. Using the following kinetic data,

Time (s) Pressure SO2Cl2 (atm)
0........ ........ ....... ........1.000
2,500 ....... ........ ..... ...0.947
5,000 ..... ........ ....... ...0.895
7,500 ......... ....... ....... 0.848
10,000 ......... ...... ...... 0.803

Determine the magnitude of the first-order rate constant: