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Q 3 Methyl bromide is produced from the following elementary, irreversible, liquid - phase, isothermal reaction: C N B r + C H 3 N

Q3 Methyl bromide is produced from the following elementary, irreversible, liquid-phase, isothermal reaction:
CNBr+CH3NH2CH3Br+NCNH2
The reaction is carried out in a CSTR (continuous stirred tank reactor) and a PFR (plug flow reactor) system. The total volumetric flowrate of the feed entering the CSTR-PFR system is 6dm3s-1. Half of the feed enters the CSTR directly. The CSTR product stream is then mixed with the other half of the feed, and the combined stream then enters the PFR. The concentration of both feed species in the feed is 0.4moldm-3. The specific rate constant of the reaction is: k=0.15dm3mol-1s-1.
(a) Calculate the volume required to achieve 40% conversion at the exit of the CSTR.
[6 marks]
(b) Calculate the PFR reactor volume to then raise the overall conversion to 80% at the exit of the CSTR-PFR reactors in series system.
[10 marks]
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