The following data are for the gas phase decomposition of phosphine 4 PH 3 (g) ---> P 4 (g) + 6 H 2 (g) at 120°C. Based on these data, the rate constant for this 1st order reaction equals what per second? (Hint: unnecessary to graph this data.) PH 3 [Molar] , 4.64 x 10 -2 / 2.32 x 10 -2 / 1.16 x 10 -2 /5.80 x 10 -3 seconds 0 / 28 / 56 / 84