only section b please

Consider the reaction; Ak1Dk2u Pure A is fed to a 1.0dm3 CSTR where it reacts to form a desired product D, which can then react further to produce an undesired product U; both nxn's are elementary, irreuvsible and werything is in liquid phase. The entering conantration of A is 1mole3/m3 at a molar flowrate of 1mol/min. a) Sketch the conversion of A, instantaneous selectivity of D toll, Sou, and the instanteneous yreld of D,Y, as a function of space time. b) If ( r=1.0min, the instantaneous 504=21 and the conversion of A is 0,5k1 and k2