The liquid-phase irreversible reaction AB+C is carried out in a CSTR. To learn the rate Jaw the
Question:
The liquid-phase irreversible reaction
A→B+C
is carried out in a CSTR. To learn the rate Jaw the volumetric flow rate, v0 , (hence τ = V/v0) is varied and the effluent concentrations of species Arecorded as a function of the space time 1: . Pure A enters the reactor at a concentrationof 2 molldm3. Steady-state conditions exist when the measurementsare recorded.
Run | 1 | 2 | 3 | 4 | 5 |
τ (min) | 15 | 38 | 100 | 300 | 1200 |
CA (mol/dm3) | 1.5 | 1.25 | 1.0 | 0.75 | 0.5 |
(a) Determine the reaction order and specific reaction rate constant.
(b) If you were to repeat this experiment to determine the kinetics, what would you do differently? Would you run at a higher, lower, or the same temperature? If you were to take more data, where would you place the measurements (e.g., τ)?
(c) It is believed that the technician may have made a dilution factor-of-10 error in one of the concentration measurements. What do you think? How do your answers compare using regression (Polymath or other software) with those obtained by graphical methods?
Elementary Principles of Chemical Processes
ISBN: 978-0471720638
3rd Edition
Authors: Richard M. Felder, Ronald W. Rousseau