The equilibrium constant for free energy is illustrated by the image below. To calculate the equilibrium constant for free energy, three essential parameters are needed and these parameters are Change in Free Energy (ΔG°), Gas Constant (R) and Temperature (T).
The formula for calculating the equilibrium constant for free energy:
K = exp(ΔG°/RT)
Where:
K = Equilibrium Constant for Free Energy
ΔG° = Change in Free Energy
R = Gas Constant
T = Temperature
Let’s solve an example;
Find the equilibrium constant for free energy when the change in free energy is 14, the gas constant is 10 and the temperature is 2.
This implies that;
ΔG° = Change in Free Energy = 14
R = Gas Constant = 10
T = Temperature = 2
K = exp(ΔG°/RT)
K = exp(14/(10)(2))
So, K = exp(14/20)
K = exp(0.7)
K = 2.0137
Therefore, the equilibrium constant for free energy is 2.0137.
Read more:Â How to Calculate and Solve for Concentration Polarization | Corrosion
How to Calculate the Equilibrium Constant for Free Energy Using Nickzom Calculator
Nickzom Calculator – The Calculator Encyclopedia is capable of calculating the equilibrium constant for free energy.
To get the answer and workings of the equilibrium constant for free energy using the Nickzom Calculator – The Calculator Encyclopedia. First, you need to obtain the app.
You can get this app via any of these means:
Web – https://www.nickzom.org/calculator-plus
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To get access to the professional version via web, you need to register and subscribe to have utter access to all functionalities.
You can also try the demo version via https://www.nickzom.org/calculator
Android (Paid) – https://play.google.com/store/apps/details?id=org.nickzom.nickzomcalculator
Android (Free) – https://play.google.com/store/apps/details?id=com.nickzom.nickzomcalculator
Apple (Paid) – https://itunes.apple.com/us/app/nickzom-calculator/id1331162702?mt=8
Once, you have obtained the calculator encyclopedia app, proceed to the Calculator Map, then click on Materials and Metallurgical under Engineering.
Now, Click on Corrosion under Materials and Metallurgical
Now, Click on Equilibrium Constant for Free Energy under Corrosion
The screenshot below displays the page or activity to enter your values, to get the answer for the equilibrium constant for free energy according to the respective parameter which is the Change in Free Energy (ΔG°), Gas Constant (R) and Temperature (T).
Now, enter the values appropriately and accordingly for the parameters as required by the Change in Free Energy (ΔG°) is 14, Gas Constant (R) is 10 and Temperature (T) is 2.
Finally, Click on Calculate
As you can see from the screenshot above, Nickzom Calculator– The Calculator Encyclopedia solves for the equilibrium constant for free energy and presents the formula, workings and steps too.
