A pollutant P degrades according to first order kinetics. An aqueous stream containing P at 2 kmole/m3 and volumetric flow rate 1m3 /h requires a mixed flow reactor of volume V to bring down the pollutant level to 0.5 kmole/m3. The inlet concentration of the pollutant is now doubled and the volumetric flow rate is tripled. If the pollutant level is to be brought down to the same level of 0.5 k.mole/m3, the volume of the mixed flow reactor should be increased by a factor of_______________?

Related Mcqs:

Batch process is preferred over continuous process, when the___________________?

A. Product yields and quality cannot be achieved in continuous process, because of long residence time B. Sales demand of product is not steady C. Same equipment cannot be used for several processes of the same nature D. All A., B. & C....

With increase in temperature, the rate constant obeying Arrhenius equation____________________?

A. Increases B. Decreases C. Decreases exponentially D. Can either increase or decrease; depends on the frequency factor...

In an ideal P.F.R. at steady state conditions ___________________?

A. The composition of reactants remains constant along a flow path B. The conversion of the reactant varies from point to point along a flow path C. There is no lateral mixing of fluid D. There may be diffusion along the flow path...

An irreversible first order reaction is being carried out in a CSTR and PFR of same volume. The liquid flow rates are same. The relative conversion will__________________?

A. Be more in CSTR than in PFR B. Be more in PFR than in CSTR C. Be same in both cases D. Depend on the temperature...

A second order reaction of the form A + B → C is called a pseudo-first order reaction, when____________________?

A. CA0 = CB0 B. CA0 > CB0 C. CB0 > CA0 D. CB0 ≥ CB0...