Solutions and Their Types

A solution is defined as a homogenous mixture consisting of two components, the solute and the solvent. Solutions are ingrained in our daily lives, as they can be found in sodas, deodorants, sugar, salt, and various other everyday items.

A solution is a type of composition that results from the reaction of two or more chemicals. We can also say that it is simple and that their corresponding properties have changed or not changed. Salt and sugar, for example, can be used to depict a solution.

Any solution can be categorised into several components giving rise to different types of solutions.

What are the Solutions?

Going by the definition, a binary solution is nothing but a homogeneous mixture of two substances. The solvent and the solute are the two chemicals or components. The material that dissolves is known as the solute. It is present in a lesser amount. On the other hand, the solvent is the liquid that absorbs the solute. It is present in a disproportionately great amount.

Characteristics of Solutions

• A solution that contains two or more components is known as homogenous.
• Filtration will not be able to separate the solute from the solution once it has been generated.
• A light beam is not allowed to travel through the solution.
• The molecules of the solute within the solution are invisible to the naked eye.
• A solution is a single-phase system that is stable.

Different Types of Solutions

It is a physical process, not a chemical process, to combine the solvent and the solute to form a solution. Using separation procedures, the solute and the solvent can be recovered in a chemically unaltered state.

Various types of solutions can be categorised based on factors such as the difference between the solute and the solvent, the number of criteria used, and so on. The classification of solutions are as follows:

On the Basis of physical state of Solute and Solvent

Solutions can be classified into 9 types on the basis of physical state of solute and solvent.

On the Basis of Water as Solvent

Depending on whether the solution is water or not, it can be categorised into two types:

• Aqueous Solution: Any state of homogenous chemical entirely dissolves in water, with water acting as a solvent. Sugar/salt in water and carbon dioxide in water are examples of this type of solution.
• Non-Aqueous Solution: These solutions are basically the opposite of the aqueous solutions, as the solvent available in it is not water but can be anything else like petrol, benzene, ether, etc. Examples of this kind of solution include phenolphthalein in benzene, sulphur in carbon disulfide, etc.

Using the Quantity of Solute Added as a Guide

Solutions can be classified into three types based on the amount of solute present in the solution.

• Saturated Solutions: A solution is considered saturated when it reaches a temperature where it can no longer dissolve any more solute in the solvent.
• Unsaturated Solutions: If the solution can still dissolve more solute insolvent, it is said to be the unsaturated solution.
• Supersaturated Solutions: A supersaturated solution is when the solute is present in excess and is forcedly dissolved in the solvent by raising the temperature. With the help of the crystallisation process, these extra solute particles are eventually detected in the form of crystals.

On the Basis of Amount of Solvent Added:

Solutions can be classified into two types based on the amount of solvent present in the solution.

• Concentrated Solutions: Large amounts of solute are added to the given solvent to give concentrated solutions.
• Dilute Solutions: A solution having a small amount of solute in a large amount of solvent is called a dilute solution.

Based on the Concentration of a Solute in Two Different Solutions:

Solutions can be classified into three types based on the concentration of the solvent in two solvents (in a beaker and a cell in it) in the solution.

• Hypertonic Solutions: Hypertonic Solutions are ones in which the concentration of solute in a beaker is larger than that in the cell, causing water to leak out of the cell, causing the cell to plasmolyse/ shrink.
• Hypotonic Solutions: Hypotonic Solutions are those solutions in which the concentration of the solute in a beaker is less as compared to the cell, so the water will move into the cell, causing it to swell and burst afterwards.
• Isotonic Solutions: Isotonic Solutions have the same solute concentration in both the beaker and the cell, so the water will move around the cell in both directions.

What are Mixtures?

When two substances are combined so that no chemical reaction happens between them, and they can be separated again, the result is a mixture. Each component in a combination retains its chemical identity. Mechanical blending is used to combine components of a mixture; however other procedures can also produce a mixture. 

Even if the components of a mixture remain unchanged, the physical qualities of the combination may differ from either of the components. For example, when you mix alcohol with water, the mixture has a different melting and boiling temperature than either component.

Homogenous mixtures

The composition of a homogeneous solution is uniform and does not readily separate. A homogeneous mixture consists of similar qualities throughout. There is usually a solvent and a solute in a homogeneous mixture, and the viscous solution is one phase. Saline and air pollution are examples of homogenous mixes. 

Heterogeneous mixtures

On the other hand, a heterogeneous solution does not have consistent qualities. The components in a mixture can frequently be seen and separated from one another. A trail mix, sand, chalk, moist sponge, and gravel submerged in water are all examples of heterogeneous mixes.

It’s a question of size, where a mixture is heterogeneous or homogeneous. When observed on a wide scale, a layer of moisture may appear to be homogenous, but when enlarged, the quantity of water will not be uniform from one location to the next.

Conclusion

Thus in this article, we discussed solutions and their types. Solutions abound in our daily lives. The separate components of a solution are so close together that they can’t be distinguished. We may also deduce that it is stable, and their respective qualities have not changed. There are a variety of options based on a variety of parameters.