What is the CSTR volume necessary to consume 99% of A when the entering molar flow rate is 5 mol/h, assuming that the reaction rate is second order(-rA= kCA2) with k = 3 dm3/mol*h and entering volumetric flow rate is 10 dm3/h?
A------> D (Isothermic)
A. 0.2 mol/dm3 B. 0.3 mol/dm3 C. 0.4 mol/dm3 D. 0.5 mol/dm3
The reaction or behavior of a CSTR is always approximated or modeled by that of a Continuous Ideally Stirred-Tank Reactor (CISTR). All calculations performed with CISTRs assumes a perfect mixing.
Write the equation for the final concentration leaving the reactor as follows:
Here, is the final concentration of reactant A, is initial concentration of reactant A, and is the conversion in the reactor.
The entering volumetric flow rate of reactant A is .
The molar flow rate of reactant A is .
Initial concentration of reactant A is calculated using following formula.
For conversion, the final concentration of the reactant from equation (1) is calculated as follows: