EX40HC – Tutorial 9 Degrees of freedom and generation of control loopsProblem 1. Consider the CSTR below, where an exothermic reaction → takes place. The feed containsspecies A at concentration ( ). The aim of the control system is to maintain the conversion ofspecies A ( )and the reaction temperature ( ) at the desired setpoints. The disturbances are ( ), ( ), ( ). a) Calculate the number of degrees of freedom for the system and the maximum number ofcontrolled and manipulated variables. b) Generate a suitable control loop that controls the maximum number of controllable variables.