The image above represents rate of heterogeneous reaction.

To compute for rate of heterogeneous reaction, two essential parameters are needed and these parameters are **dn/dt **and **Amount of Material (n).**

The formula for calculating rate of heterogeneous reaction:

V = ^{dn/dt} / _{n}

Where:

V = Rate of Heterogeneous Reaction

dn/dt = dn/dt

n = Amount of Material

Let’s solve an example;

Find the rate of heterogeneous reaction when the dn/dt is 36 and the amount of material is 12.

This implies that;

dn/dt = dn/dt = 36

n = Amount of Material = 12

V = ^{dn/dt} / _{n}

V = ^{24} / _{12}

V = 2

Therefore, the **rate of heterogeneous reaction **is **2.**

**Calculating the dn/dt when the Rate of Heterogeneous Reaction and the Amount of Material is Given.**

dn/dt = V x n

Where;

dn/dt = dn/dt

V = Rate of Heterogeneous Reaction

n = Amount of Material

Let’s solve an example;

Find the dn/dt when the rate of heterogeneous reaction is 28 and the amount of material is 2.

This implies that;

V = Rate of Heterogeneous Reaction = 28

n = Amount of Material = 2

dn/dt = V x n

dn/dt = 28 x 2

dn/dt = 56

Therefore, the **dn/dt **is **56.**

**Calculating the Amount of Material when the Rate of Homogeneous Reaction and the dn/dt is Given.**

n = ^{dn/dt} / _{V}

Where;

n = Amount of Material

V = Rate of Heterogeneous Reaction

dn/dt = dn/dt

Let’s solve an example;

Find the amount of material when the rate of heterogeneous reaction is 12 and the dn/dt is 36.

This implies that;

V = Rate of Heterogeneous Reaction = 12

dn/dt = dn/dt = 36

n = ^{dn/dt} / _{V}

n = ^{36} / _{12}

n = 3

Therefore, the **amount of material **is **3.**

Nickzom Calculator – **The Calculator Encyclopedia** is capable of calculating the rate of heterogeneous reaction.

To get the answer and workings of the rate of heterogeneous reaction 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 **for** NGN 2,000 **per** annum** 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 **Rate of Heterogeneous Reaction** under **Corrosion**

The screenshot below displays the page or activity to enter your values, to get the answer for the rate of heterogeneous reaction according to the respective parameters which is the **dn/dt **and **Amount of Material (n).**

Now, enter the value appropriately and accordingly for the parameter as required by the **dn/dt **is **36 **and **Amount of Material (n) **is **12.**

Finally, Click on Calculate

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