SO2 Conversion Equilibrium Curve

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SUMMARY

The discussion focuses on drawing the equilibrium curve for the oxidation of sulfur dioxide (SO2) to sulfur trioxide (SO3) using the equilibrium constant (Kp) and temperature (T). The relevant equations provided are Kp = (PSO3) / (PSO2)(PO2)^(1/2) and log Kp = (4956 / T) - 4.678. To create the equilibrium curve, one must plot Kp against temperature, taking into account that the conversion ratio also depends on total pressure and initial amounts. Excel can be utilized for graphing once the necessary calculations are performed.

PREREQUISITES
  • Understanding of chemical equilibrium and the concept of equilibrium constants (Kp).
  • Familiarity with plotting data in Excel.
  • Knowledge of the relationship between temperature, pressure, and conversion ratios in chemical reactions.
  • Basic skills in manipulating logarithmic equations.
NEXT STEPS
  • Learn how to calculate Kc from Kp for specific pressures.
  • Research methods for plotting chemical equilibrium data in Excel.
  • Study the effects of temperature and pressure on equilibrium conversion ratios.
  • Explore resources on the oxidation of SO2 to SO3 for additional data and examples.
USEFUL FOR

Chemical engineers, students studying thermodynamics, and researchers involved in reaction kinetics will benefit from this discussion, particularly those focused on equilibrium analysis in gas-phase reactions.

dragon01
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TL;DR
Conversion Equilibrium Curve
Hi...
i want to draw Equilibrium curve for SO2 oxidation to SO3, i found following relations but don't know to use them... kindly tell me how to draw Equilibrium curve using these equations or any source on web from where i can get directly SO2 oxidation data Vs Temp?

Equations are following;

1. Kp = (PSO3) /(PSO2) (PO2)1/2
2. log Kp = (4956 /T) - 4.678
thank you!
 
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dragon01 said:
i want to draw Equilibrium curve for SO2 oxidation to SO3

It is not clear what you are looking for, please elaborate.

Kp is the equilibrium constant for the process so technically just using the second equation to make a plot of Kp vs T is a possible answer. That is, assuming by "curve" you mean the dependence on the temperature, because even that is not clear from your post.
 
Borek said:
It is not clear what you are looking for, please elaborate.

Kp is the equilibrium constant for the process so technically just using the second equation to make a plot of Kp vs T is a possible answer. That is, assuming by "curve" you mean the dependence on the temperature, because even that is not clear from your post.

Well, I should find the equilibrium curve of conversion of SO2 in SO3. I should have on the Y axes the conversion ratio, on the X axes the Temperature measured in Kelvin. I have the definition of Kp as showed, but I really don’t know how to elaborate a graph on excel with this characteristics
 
There is not enough data - conversion ratio is not only a function of Kp and T, but also of total pressure.

For a given pressure you should be able to calculate the conversion ratio from Kc (probably with some additional assumptions about initial amounts/volume), then making a plot is easy.
 
I came.across a headline and read some of the article, so I was curious. Scientists discover that gold is a 'reactive metal' by accidentally creating a new material in the lab https://www.earth.com/news/discovery-that-gold-is-reactive-metal-by-creating-gold-hydride-in-lab-experiment/ From SLAC - A SLAC team unexpectedly formed gold hydride in an experiment that could pave the way for studying materials under extreme conditions like those found inside certain planets and stars undergoing...

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