= 4. Consider a plugflow reactor followed by a backmix reactor where the series reaction (A -> R- S, k = 0.1/min, K2 = 0.05mol/li min) takes place. The reactors are of the same size and maintained at the same temperature with t = 4 minutes in each reactor. Determine the concentrations of A, R and S in each reactor if Cao = 1 mol/li, Cro = Cso = 0. = =