2A Load the lollowing Polymath/MATLAB/FEMLAB programs from the CD-ROM where appropriate: (a) Example 8-1. How would this example change if a CSTR were used instead of a PFR? (b) Example 8-2. What would the heat of reaction be if 50% inerts (e.g.. helium) were added to the system? What would be the \% error if the CP tern were neglected? (c) Example 8-3. What if the butane reation were earried out in a 0.8m3 PFR that ean be pressurized to very high pressures? What inlet temperature would you reconimend? Is there an optimuns temperature? How would your answer ehange for a 2m3CSTR ? (d) Example 8-4. (1) How would the answers change if the reactor were in a counter eurrent exehanger where the coolant temperature was not constant along the length of the reactor? The mass How rate and heat capaeity of the eoolant are 50kg/h and 75kJ/kg/K, respeetively, and the entering coolant temperature is 310K. Vary the coolant rate, mc. make a plot of X versus mC. (2) Repeat (1) but change the parameters Kc, E. 1.000