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How Does the Principle of Viscosity Work in Various Solutions?

The working principle of viscosity is different for each solution. Viscosity will determine the thickness or internal friction in it. Some solutions have high viscosity. Some other solutions have low viscosity. To find out whether the viscosity of a solution is high or low, you can do research and compare the results. Here’s a complete explanation of the working principle of viscosity in each solution!

Definition of viscosity

In chemistry, there is a term called viscosity. Viscosity is a term that refers to shear stresses with a constant shear speed. Usually research on viscosity is related to liquid. Viscosity shows the thickness or thickness of a fluid or liquid. If a liquid is thick and concentrated, then the viscosity is high. If the liquid is very liquid (water), the viscosity is low.

The effect of viscosity on liquid is on the speed of the liquid moving from one place to another. For example, you have water in one container and oil in another container. Then, you move the two liquids into another separate container. You move water from container B to C and oil from container D to E. Compare the time taken by the water and oil to move. Does the oil take longer to move from one container to another? Of course, because oil viscosity is higher than water, it makes it take longer to move.

Examples of viscosity studies

Usually, in research conducted in a laboratory, a laboratory person compares many liquids to be measured and their viscosity known. Knowing the viscosity is important because it will affect the process and results of the research conducted. But there are also special studies conducted to determine the viscosity of each type of liquid. Research like this is usually used to compare the high and low of various liquid substances and what factors affect viscosity.

If you do research using a variety of liquids, then you can find out how much the viscosity of each liquid. For example, the viscosity of water is 1.8×10-3, the viscosity of blood is 4.0×10-3, the viscosity of engine oil is 200×10-3, and the viscosity of ethyl alcohol is 1.2×10-3. From this comparison, you can know that each liquid has a different level of viscosity. Then, what exactly affects the working principle of viscosity in each solution?

Things that affect viscosity

Basically, the working principle of viscosity is influenced by several things, as below:

Concentration of solution

Viscosity is directly proportional to the concentration of the solution. Therefore, if the concentration of the solution is high, the viscosity of the solution will be high. Conversely, if the concentration of the solution is low, then the viscosity is low. Such is the principle of work of viscosity in solution.

Intermolecular strength

The viscosity of the liquid will increase with the increase in the number of other molecules. For example, the viscosity of a liquid will increase if hydrogen is added. This is because the power has changed.

Size and molecular weight

Just as the intermolecular forces affect the viscosity of the liquid, the size and weight of the molecule also influences the working principle of viscosity. The more molecular weight in a liquid, the higher the viscosity.


Temperature is very influential on the level of viscosity of liquid. The viscosity of liquid will increase when the temperature drops. For example, hot water that has low viscosity. When the temperature is lowered, until the water becomes almost frozen, the viscosity will increase.

That is an explanation of the working principle of viscosity in each solution. In essence, the viscosity of liquid substances differs from one another based on the things that affect them. The viscosity of the liquid itself can be measured using a viscometer. You can get a viscometer at Infiniti Bioanalitika Solusindo (IBS)!

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