# SO2 Conversion Equilibrium Curve

• dragon01
In summary, the conversation is about drawing an equilibrium curve for the conversion of SO2 to SO3 using the given equations and temperature data, but more data is needed to accurately plot the conversion ratio. The equations provided can be used to calculate the equilibrium constant (Kp) and ultimately the conversion ratio, but additional information on total pressure is necessary for an accurate plot.

#### dragon01

TL;DR Summary
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!

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.

## 1. What is an SO2 conversion equilibrium curve?

An SO2 conversion equilibrium curve is a graphical representation of the relationship between the concentration of SO2 gas and its conversion to other forms, such as SO3 or SO4. It shows the point at which the reaction reaches equilibrium and the concentrations of each species at that point.

## 2. How is an SO2 conversion equilibrium curve determined?

An SO2 conversion equilibrium curve is determined through experimental methods, such as measuring the concentrations of SO2 and its conversion products at different reaction conditions. The data is then plotted on a graph, and the equilibrium point is determined by observing where the curve levels off.

## 3. What factors affect the shape of an SO2 conversion equilibrium curve?

The shape of an SO2 conversion equilibrium curve is affected by factors such as temperature, pressure, and the presence of catalysts. These factors can alter the rate of the reaction and shift the equilibrium point, resulting in a different curve shape.

## 4. What is the significance of an SO2 conversion equilibrium curve?

An SO2 conversion equilibrium curve is significant because it provides valuable information about the behavior of the SO2 conversion reaction. It helps in understanding the conditions under which the reaction reaches equilibrium and the concentrations of each species at that point. This information is crucial in designing and optimizing industrial processes involving SO2.

## 5. Can an SO2 conversion equilibrium curve be used to predict the outcome of a reaction?

Yes, an SO2 conversion equilibrium curve can be used to predict the outcome of a reaction. By knowing the initial conditions and plotting them on the curve, one can determine the final concentrations of each species at equilibrium. This information can be used to optimize reaction conditions and improve the efficiency of industrial processes.