To find out kinetics of a reaction always conc. and time is needed.
Is there any concept of finding out kinetics of product yield with respect to time?
Yes. If you have concentration vs time, a first order kinetic model based in limiting reactant (A) is: CA(t)=CA0exp(-kt), where “CA(t)” is concentration at any time “t”, “C0” is the concentration at time 0 and “k” is the first order reaction rate constant; and the same kinetic in terms of product (P) is CP(t)=CA0(YP/A)*(1-exp(-kt)) where “YP/A” is the yield of P with respect to A (from stoichiometry relation in gP/gA). If you define yield as “y=CP(t)/CPmax” (and CPmax=CA0(YP/A)) the kinetic may be represented by y=1-exp(-t) which is the relation that you need. For another order kinetic or another yield definition you can deduce your kinetic expression.
The ratio of the product to the consumed starting material is called the SELECTIVITY. As far as I understand you want to determine the selectivity versus time. You need to measure the consumption of your starting material and the formation of the product versus time.
Only if the reaction rate is dependent on one reactant only. Then as described earlier by Miguel, you can use stoichiometry to evaluate klinetics. You can extend Miguel's explanation to higher orders.
Yes, you can follow the concept as described by Miguel to find out the kinetics of reaction such as order of reaction, reaction rate constants and activation energy by plotting the rate constants versus reaction temperature.
Azhari Muhammad Syam Kanchan Mondal Yurii V Geletii Miguel Angel García-Alvarado what if the kinetics is hugely dependent on temperature and complex intermediates being formed? For e.g: pyrolysis of biomass where I want to know the yields of gases from kinetic equation. how do i go about it?
Commonly, the kinetics of a complex chemical process can't be described by a single equation. You need to build a so called kinetic model.
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