a) Residence time (2 P) Calculate the residence time of a continuous reactor! Assume a reactor volume of V = 13.8 dm and a volumetric flow rate of V = 6 cm b) Damkhler number (4 P) You study a second order reaction in a batch reactor (BR) at constant temperature. The rate constant is k1, and the reaction time (residence time) is 7 = 2.3 min. How large is the Damkhler number (Da) under these conditions? Calculate the expected conversion X! (4 P) c) Reaction order and selectivity You identify two reactions in a reactor A+B+D, ki, -TA1 = VTB A+BU, -"A,2 = ACBC? Determine the reaction order of the first and second reaction! 02 If D is the desired and U the undesired product, under which conditions should you run the reactions? To answer this make use of the definition of instantaneous selec- tivity. Should Co be low or high? Which influence does C have on the selectivity? d) Loop reactor (2P) A loop reactor connects the two ideal reactors CSTR and PFR. Which behaviour (CSTR or PFR) do you approximate if the recycle ratio R tends to zero and infinity? R=0 R=0 e) Products (2P) Consider the followinf two reactions. If X is the value product which species would you assign as a co-product and by-product? A+B+D+U B+D+X (4 P) f) Extend of a reaction You study the reaction of sucrose with oxygen: CH22011+12 0,+ 12 CO2 + 11 H2O Fill out the table below completely! Also find the conversion X based on sucrose and the extend of reaction X! Species Start (mol] Change (mol] End [mol] C1H,2011 20 18 02 280 CO2 10 HO 0 Ar 20 g) Residence time distribution (RTD) (2 P) Consider a CSTR and a PFR in a series. Assume that both reactors have r = 5 s. To study the beahviour of the reactor you apply a step signal at the inlet of the CSTR and measure the signal at the outlet of the PFR. How would the signal look like assuming that the reactors behave ideally