The following data were abtained during the first order thermal decomposition of `SO_(2) Cl_(2)` at a constant volume :
`SO_(2)Cl_(2) (g) to SO_(2)(g)+Cl_(2)(g)`
`{:("Experiment Times"//s^(-1) " Total pressure/atm"),("1 0 0.4" ),("2 100 0.7"):}`
Calculate the rate constant. Given : Log 4 = 0.6021, log 2 = 0.3010)