The gas phase decomposition of N2O5 was studied as constant temperature: 2 N2O5 (g) 4 NO2 (g) + O2 (g) The reaction is first-order in [N2O5] with a half-life of 100.0 seconds. The initial concentration of [N2O5] = [N2O5]0 = 0.100 M (a) What is the rate constant of the decomposition reaction? (b) How much time is required for [N2O5] to decrease down to 0.00525 M?
