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The reason that a PFR requires less volume than a CSTR is the difference in residence time distribution between the reactors. Residence time is the amount of time molecules spend in the reactor which equal to v/vo (v=volume of the reactor and v0 is volumetric flow rate). Let us assume that we design a PFR and CSTR that have similar residence time i.e. ratio of volume v and v0 is the same and we are pumping about 100 molecule per minute to each reactor. In the case of PFR, all the 100 molecules will spend exactly the same time inside the reactor (v/v0). In the case of CSTR, things are little more complicated, once the 100 molecule hit the CSTR, they mixted instantaneously and thus some of these 100 molecules will leave from the reactor exit stream very early i.e. will spend much less time inside the reactor (less the v/v0) and of course some these 100 molecule will spend more time making the average residence time the same as the PFR. Therefore, with the chance that molecules will spend shorter time in CSTR, we try to compensate for that effect by making bigger reactors so the ratio of these molecules spending short period of time inside the reactor less and thus its performance is comparable to the PFR.
Very logical and easy to understand explanation. But how to prove series of CSTR equals to one PFR which is having a volume of sum of all CSTRs?
What else can I help you with?
What will not affect reaction rates?
Astrological signs will not affect reaction rates.
Reaction rate refers to how quickly or slowly the?
A reaction rate refers to the speed at which reactants are converted into products during a chemical reaction. It is influenced by factors such as temperature, concentration of reactants, and presence of catalysts. Higher reaction rates indicate a faster conversion of reactants into products.
Why is the volume of water used in the disappearing cross experiment varied?
The volume of water used in the disappearing cross experiment is varied to observe the effects of different concentrations on the rate of the reaction. By changing the volume of water, researchers can test how the reaction rate is affected as the concentration of the reactants changes. This helps in understanding the relationship between concentration and reaction rates.
How does physical states relate to reaction rates?
The reaction rates are higher in gases.
1080000000 GBP converted to Canadian dollars?
Conversion rates for currency change daily. See the link below for currency conversion rates
Where can one find international currency conversion rates online?
There are many different places one could find international currency conversion rates online. Yahoo has an extension in their finance section that will show one international currency conversion rates.
How nuclear decay rates different from chemical reaction rates?
nuclear decay rates take more time and chemical reaction rates could happen fast.
What causes pressure changes of reactants to affect the reaction rate?
The frequency of collisions is changed.
What reaction rates do not tell you how fast?
Reaction rates do not provide information about the mechanism of a reaction, the pathway taken by the reaction, or the individual steps involved in the process. Additionally, reaction rates do not give details about the concentration of reactants or products at different points during the reaction.
Where can one find the current Euro to Dollar conversion rates?
One can find the current Euro to Dollar conversion rates on the XE website, which has real time currency conversion. One can also find currency rates in real time at Yahoo! Finance and CNN Money.
Should List two constants in this experiment?
The volume of the reactants in the experiment, which should remain constant to ensure accurate measurements and comparisons. The temperature of the reaction system, which should be controlled and consistent to prevent fluctuations in reaction rates.
Which of these factors will not affect reaction rates?
The presence of a catalyst will not affect reaction rates. Catalysts work by lowering the activation energy of a reaction, thus speeding it up, but they do not participate in the reaction itself and are not consumed or changed by the reaction.
