16.71 The rate law for the reaction NO2(g)+CO(g)NO(g)+CO2(g) is rate =k[NO2]2; one possible mechanism is shown on p. 526. (a) Draw a reaction energy diagram for that mechanism, given that Hoverall=226kJ/mol. (b) The following alternative mechanism has been proposed: (1) 2NO2(g)N2(g)+2O2(g) [slow] (2) 2CO(g)+O2(g)2CO2(g) [fast] (3) N2(g)+O2(g)2NO(g) [fast] Is the alternative mechanism consistent with the rate law? Is one mechanism more reasonable physically? Explain