How do I plot the freundlich isotherm graph given P/atm and V/cm3 data.
I know that the plot is suppose to be log x/M vs log c. However, how do I get the x/m from the data and which is the c.
I have already plotted the Langmuir isotherm of this data. How do I manipulate the data to plot a freundlich isotherm?
well, it sure is hard to plot a graph with no data. Maybe this will help, if you haven't already seen its like:
https://en.wikipedia.org/wiki/Freundlich_equation
To plot the Freundlich isotherm graph using P/atm and V/cm3 data, you need to manipulate the data appropriately to obtain the values for x/m (adsorption capacity) and c (concentration).
The Freundlich isotherm equation is given by:
V = (x/m) * (P/c)^(1/n)
where:
- V is the volume of gas adsorbed at pressure P/atm
- x/m is the adsorption capacity
- c is the concentration of gas in the gas phase
- n is the Freundlich constant, representing the adsorption intensity
To manipulate the data, follow these steps:
1. Convert the pressure values from atm to cm3. If your data is already in cm3, you can skip this step. Otherwise, use the ideal gas law equation P * V = n * R * T to convert the values.
2. Calculate the concentration (c) by dividing the converted pressure (P) values by the volume (V) values. This will give you the concentration in cm3.
3. Take the logarithm (log) of both the x/m values and the concentration (c) values to obtain log x/m and log c.
4. Plot the graph with log x/m on the y-axis and log c on the x-axis.
By applying these steps to your existing Langmuir isotherm data, you will be able to manipulate the data appropriately to plot a Freundlich isotherm.