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What is the effect of temperature on conversion value in cstr?
Temperature affects the conversion value in a CSTR in two ways: 1) it should increase the rate of conversion 2) it should shift the equilibrium of the reaction note that in shifting the equilibrium, it shifts the equilibrium of ALL reactions including side reactions which can be suppressed or promoted If the reaction is nearing equilibrium prior to exiting the reactor, the second effect can be very significant. Increasing the rate of conversion could allow faster throughput in the reactor with the same conversion - unless the effect on equilibrium shift is significant
Diffeerence between CSTR and PFR on volume baises?
For simple understanding PFR can be imagined as multiple CSTR's in series. PFR has benefits of higher conversion rates, product uniformity & less energy losses. CSTR stands for Continuously Stirred Tank Reactor. PFR stands for Plug Flow Reactor.
What are the conditions for reaction between Ethylene oxide and water in a plug flow reactor or in a Continuous Stirred Tank Reactor?
The Feed conditons entering are at 25 deg c with 101.3 kpa the reactor is a cstr operating at 65deg c the product if ethylene glycol!!!!!!
Write down a brief summary of the main steps you took in the procedure. Be sure to include any adjustments you made to the procedure what they were and why you made them.?
In the procedure, I began by carefully preparing all necessary materials and ensuring proper safety protocols were in place. During the initial steps, I noticed that the reaction rate was slower than expected, so I adjusted the temperature to optimize the reaction conditions. Additionally, I modified the concentration of one of the reactants to enhance the overall yield. These adjustments were made based on preliminary observations to improve the efficiency and effectiveness of the experiment.
How is enhance used in a sentence?
The National Broadband Network will enhance our internet
What is the effect of temperature on conversion value in cstr?
Temperature affects the conversion value in a CSTR in two ways: 1) it should increase the rate of conversion 2) it should shift the equilibrium of the reaction note that in shifting the equilibrium, it shifts the equilibrium of ALL reactions including side reactions which can be suppressed or promoted If the reaction is nearing equilibrium prior to exiting the reactor, the second effect can be very significant. Increasing the rate of conversion could allow faster throughput in the reactor with the same conversion - unless the effect on equilibrium shift is significant
What is the controlling factor in very fast heterogeneous reaction?
In very fast heterogeneous reactions, the controlling factor is typically the rate of mass transfer of reactants to the reaction surface, rather than the intrinsic chemical reaction rate at the surface. This is because the reaction rate is limited by how quickly reactants can reach the surface and participate in the reaction. Improving mass transfer, for example by increasing surface area or stirring the system, can enhance the overall reaction rate.
What is the equation for reaction rate?
. The transformation of glucose into fructose by the enzyme glucose isomerase, was carried out in two different types suspended-enzyme bioreactors: 1) CSTR, and 2) plug flow reactor. The process obeys Michaelis-Menten kinetics. The following parameters and kinetic constants were kept the same in both bioreactors: $ So (input substrate concentration) = 1.0 mMol/L; $ F (volumetric flow rate) = 1.0 m3/h; $ Km = 7x10-4 Mol/L; $ Vmax = 0.2 mMol/(L.h) Determine: $ Volume of CSTR for 50% conversion of glucose; $ Volume of PFR for 50% conversion of glucose; $ Volumes of CSTR and PFR in series (assume that the volumes are equal) in two cases: $ first CSTR $ first PFR 2. Calculate the volume of a stirred tank bioreactor containing the same enzyme, but immobilized on the surface of a flat-geometry support. The value of the mass-transfer coefficient is 0.6 h-1. The values of the rest of process parameters are the same as above.
Why volume PFR less than CSTR for same conversion and reaction rate?
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 measures of how fast reaction occurs?
The measure is the rate of reaction.
What is the ticker symbol for coinstars?
Cstr
What is the speed at which a reaction occurs called?
The chemical term is reaction rate.
What is the zero order reaction rate law and how does it determine the rate of a chemical reaction?
The zero order reaction rate law states that the rate of a chemical reaction is independent of the concentration of the reactants. This means that the rate of the reaction remains constant over time. The rate of the reaction is determined solely by the rate constant, which is specific to each reaction. This rate law is expressed as: Rate k, where k is the rate constant.
What is the first-order reaction formula used to determine the rate of a chemical reaction?
The first-order reaction formula used to determine the rate of a chemical reaction is: Rate kA, where Rate is the reaction rate, k is the rate constant, and A is the concentration of the reactant.
The primary purpose of a moderator used in a nuclear reaction is to?
control the rate of the nuclear reaction by slowing down neutrons to enhance the likelihood of fission events. This helps sustain a controlled chain reaction while preventing overheating and runaway reactions.
What affect rates does a enzyme catalyzed reaction have?
Enzyme-catalyzed reactions generally increase the rate of a reaction by lowering the activation energy required for the reaction to occur. Enzymes do this by stabilizing the transition state of the reaction, allowing it to proceed more easily and quickly. Additionally, enzymes can enhance reaction specificity and selectivity, making them very efficient catalysts.
What is the rate law for a zero-order reaction?
The rate law for a zero-order reaction is rate k, where k is the rate constant. In a zero-order reaction, the rate of the reaction is independent of the concentration of the reactants.
