Permanganometric titration is one type of titration of chemical solutions. Titration itself is a chemical method that is quite often heard, including when you were still in school or currently working in the health sector to industry. Titration is a chemical method used to determine the concentration of a solution. In this article, you will get acquainted further with permanganometric titration.

This permanganometric titration is used to determine the pH level of a certain chemical. A common function like any other titration method. However, specifically in this type of method, certain reagents are used as measurement benchmarks. So that you are no longer confused, you can read the reviews below.

What is Permanganometric Titration

The definition is not too much different from the general definition of titration itself. This permanganometric titration is a type or method of titration that uses potassium permanganate (KMnO4) as the basis of the reaction. No wonder it is then called permanganometry. The focus of the reduction and oxidation reactions is seen between the raw material being measured with this potassium permanganate.

Maybe you have heard of potassium permanganate. Apart from being an oxidizing agent, this one substance is also an inorganic chemical compound which is well known as a drug in the medical world. Potassium permanganate itself is often used as an ingredient for cleaning wounds and dermatitis.

The titration method that uses potassium permanganate as a reagent has been used for a long time. It has been more than a century for people to use this permanganometric titration method. Naturally, because the titration method in general itself has been introduced since 1845 by a chemist from France, Etienne Ossian Henry.

Also read: Definition, How it Works, and Types of Acid-Base Titration

Permanganometric Indicators

Just like other titration methods, permanganometry also has an indicator. This indicator serves as a marker of reaction. So, when you apply the permanganometric method you can find out the reaction status of this indicator. Generally, this permanganometric titration process is carried out directly. The method is carried out using a means that can be oxidized such as iron, salt or oxalic acid, and so on.

Permanganometry using potassium permanganate is considered to be the most economical method. This is because in the process you don't need an external indicator. Indicators are only needed when using very dilute solutions. That is why permanganometry is also known as a method that has an auto-indicator.

Permanganometric titration is said to have an auto-indicator because the potassium permanganate used can change color depending on the type of reaction. This will make it easier for you later in the titration process. Just one drop of permanganate can make the solution being titrated change its color to a vivid bright pink color. When the solution turns pink, this means that an excessive amount of reagent has been used.

Also read: Understanding Potentiometric Titration and Its Functions

Properties of Potassium Permanganate

You need to know how the properties of potassium permanganate. This one reagent is a strong oxidizing agent. Especially in solutions that have these three properties, namely solutions that are weakly basic, neutral, and also weakly acidic. Conversely, in a solution that is strongly alkaline, the ions from the permanganate can be reduced.

Reduction of permanganate in a strong alkaline solution will be reduced to manganate ion (Mn2 +). When experiencing this reduction, as discussed earlier, the solution will change color. When it is reduced to manganate ion, the color that appears is green. For this titration method itself, it is highly recommended to use it when checking the concentration of a strong acidic solution. The reason is that there is no back and forth reaction but the desired reaction can occur immediately. This is because the electrode potential in the solution is greatly influenced by the pH of the solution itself.

In the process of doing this titration method, of course you will need several titration tools. Common tools you will need include a volume pipette, measuring flask, erlenmeyer tube, statif, burette, suction rubber, and so on. Some titration processes also include a catalyst to speed up the reaction, but of course it also depends on the needs.

Those are some basic things to know about one of these types of titrations. The advantage is that it has autoindicator properties that can be taken into consideration when choosing the type or method of this titration. Next, you just need to prepare in more detail the test steps with this permanganometric titration method.

Also read: How to Use Karl Fischer Titration You Need to Understand