The image of concentration polarization is shown below.

To compute for concentration polarization, six essential parameters are needed and these parameters are **Gas Constant (R), Temperature (T), Number of Electrons (n), Faraday’s Constant (F), Current Density (i)** and **Limiting Diffusion Current Density (i _{L}).**

The formula for calculating concentration polarization:

η_{c} = ^{2.3RT}/_{nF} log(1 – ^{i}/_{iL})

Where:

η_{c} = Concentration Polarization

R = Gas Constant

T = Temperature

n = Number of Electrons

F = Faraday’s Constant

i = Current Density

i_{L} = Limiting Diffusion Current Density

Let’s solve an example;

Find the concentration Polarization when the gas constant is 14, the temperature is 7, the number of electrons is 8, the faraday’s constant is 4, the current density is 1 and the limiting diffusion current density is 2.

This implies that;

R = Gas Constant = 14

T = Temperature = 7

n = Number of Electrons = 8

F = Faraday’s Constant = 4

i = Current Density = 1

i_{L} = Limiting Diffusion Current Density = 2

η_{c} = ^{2.3RT}/_{nF} log(1 – ^{i}/_{iL})

η_{c} = ^{2.3(14)(7)}/_{(8)(4)} log(1 – (^{1}/_{2}))

η_{c} = ^{225.39}/_{32} log(1 – 0.5)

η_{c} = 7.043749 log(0.5)

η_{c} = 7.043749 (-0.301029)

η_{c} = -2.120

Therefore, the **concentration polarization **is **-2.120.**

Nickzom Calculator – **The Calculator Encyclopedia** is capable of calculating the concentration polarization.

To get the answer and workings of the concentration polarization 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

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 **Concentration**** Polarization** under **Corrosion**

The screenshot below displays the page or activity to enter your values, to get the answer for the concentration polarization according to the respective parameter which is the **Gas Constant (R), Temperature (T), Number of Electrons (n), Faraday’s Constant (F), Current Density (i)** and **Limiting Diffusion Current Density (i _{L}).**

Now, enter the values appropriately and accordingly for the parameters as required by the **Gas Constant (R)** is **14**,** Temperature (T)** is **7**,** Number of Electrons (n)** is **8**,** Faraday’s Constant (F)** is **4**,** Current Density (i) **is **1** and **Limiting Diffusion Current Density (i _{L})** is

**2**.

Finally, Click on Calculate

As you can see from the screenshot above, **Nickzom Calculator**– The Calculator Encyclopedia solves for the concentration polarization and presents the formula, workings and steps too.