Which of the following factors influence the rate of combustion of droplet of fuel. i. Surface reaction ii. Pore diffusion iii. Temperature gradients within the droplet iv. Temperature gradient in the film surrounding the droplet v. Film mass transfer Indicate if each factor is either very important, highly likely, highly unlikely, not at all important influence on the reaction d Sketch the probable RTD profile for pulse tracer injection for the following reactor combinations. i. CSTR followed by a PFR ii. PFR followed by a CSTR iii. Two PFR in series iv. Two CSTR in series v. PBR followed by CSTR For an equilibrium limited reaction such as esterification of acetic acid by ethanol to produce ethyl acetate and water, sketch the possible reactor configurations to maximize reaction conversion