# How to Calculate and Solve for Electrode Potential | Nernst Equation | Corrosion

The image above represents electrode potential. Three essential parameters are needed to calculate electrode potential: standard electrode potential (Eo), number of electrons (n), and molar activity (cion).

### The formula for calculating electrode potential:

E = Eo0.059/nIn(Cion)

Where:

E = Electrode Potential | Nernst Equation
Eo = Standard Electrode Potential
n = Number of Electrons
Cion = Molar Activity

Let’s solve an example;
Find the electrode potential when the standard electrode potential is 14, the number of electrons is 10 and the molar activity is 12.

This implies that;

Eo = Standard Electrode Potential = 14
n = Number of Electrons = 10
Cion = Molar Activity = 12

E = Eo0.059/nIn(Cion)
E = 14 – 0.059/10In(12)
So, E = 14 – (0.0059)(2.48)
E = 14 – 0.0146
E = 13.98

Therefore, theÂ electrode potentialÂ isÂ 13.98 V.

### How to Calculate Electrode Potential with Nernst Equation Using Nickzom Calculator

Nickzom Calculator â€“Â The Calculator Encyclopedia is capable of calculating the electrode potential.

To get the answer and workings of the electrode potential using theÂ Nickzom Calculator â€“ The Calculator Encyclopedia.Â First, you need to obtain the app.

You can get this app via any of these means:

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To get access to theÂ professionalÂ version via web, you need toÂ registerÂ andÂ subscribeÂ forÂ NGN 2,000Â perÂ annumÂ to have utter access to all functionalities.
You can also try theÂ demoÂ version viaÂ https://www.nickzom.org/calculator

Apple (Paid)Â â€“Â https://itunes.apple.com/us/app/nickzom-calculator/id1331162702?mt=8
Once, you have obtained the calculator encyclopedia app, proceed to theÂ Calculator Map,Â then click onÂ Materials and MetallurgicalÂ underÂ Engineering.

Now, Click onÂ CorrosionÂ underÂ Materials and Metallurgical

Now, Click on Electrode Potential underÂ Corrosion

The screenshot below displays the page or activity to enter your values, to get the answer for the electrode potential according to the respective parameters which is the Standard Electrode Potential (Eo), Number of Electrons (n)Â andÂ Molar Activity (Cion).

Now, enter theÂ value appropriately and accordingly for the parameter as required by the Standard Electrode Potential (Eo)Â is 14, Number of Electrons (n)Â isÂ 10Â andÂ Molar Activity (Cion)Â is 12.

Finally, Click on Calculate

As you can see from the screenshot above,Â Nickzom Calculatorâ€“ The Calculator Encyclopedia solves for the electrode potential and presents the formula, workings and steps too.