In chemistry, a solution is a mixture of two or more compounds in a liquid. There are colorless and multicolored solutions. While some solutions are clear, others are obscure. Similarly, we might find a wide range of options around us. Three broad categories of solutions can also be classified based on fundamental distinctions. True solutions, colloidal solutions, and suspensions all fall into this category. True solutions are homogeneous, whereas colloidal solutions are non-homogeneous. This is the major distinction between the two. The distribution of particles in homogeneous solutions is uniform, however in heterogeneous solutions, the distribution is not.
What is the True Solution ?
In order to be considered a real solution, it must contain all of the particles in the correct composition and have been thoroughly dissolved. Because of this, a solution is regarded as a real solution.
A real solution is a homogeneous mixture with qualities that are consistent throughout. In a real solution, filtration will not be able to separate the solute from the solution. The particle size of the solute is almost the same as the particle size of the solvent, and the solvent and solute travel through the filter paper together.
A true solution is called as a homogeneous mixture of multiple substances in which the particle size size of the material dissolved (soluted) in the solvent is as less as 10-9 m or 1 nm, and in which the particle size of the solvent is less than 10-9 m or 1 nm. A simple sugar solution in water is an excellent example of a true solution.
The Characteristics of the True Solution
1.) A True solution is homogenous mixture of solute and solvent which has no impurities. In a real solution, filtration will not be able to separate the solute from the solution. The particle size of the solute is almost the same as the particle size of the solvent, and the solvent and solute travel through the filter paper together.
2.) Solute particles are less than one nanometer in size (1 nanometer =10-9m). They do not scatter light and do not exhibit the Tyndall effect, which means they are not reflective. Filtration would not be able to separate the particles from one another. The outcome is predictable (remains uniform). The solution is readily apparent. A True solution is one in which the solute particles do not settle. In a True solution, there should be no scattering of light. A True solution is one that is transparent and Spotless clear
3.) The compounds that combine to form a homogenous solution are referred to as solution components. It is made up of two major components: a solvent and a solute, in that order. In a solution, a solvent is a component that is capable of dissolving the other components while remaining in solution. The solvent constitutes the majority of the solution’s composition.
Preparation of a True Solution
A true solution of Sodium Chloride:
To begin, fill a clean and dry beaker with 100 mL of distilled water and then add dry common salt. Stir the contents with a glass rod to ensure even distribution. Common salt must be completely dissolved in order to generate a True solution.
True Solution of Sugar:
To make sugar crystals, place a few sugar crystals in a clean and dry beaker and swirl the contents with a glass rod until the sugar crystals are dissolved. Sugar must dissolve completely in water in order to make a true solution.
The True Solution of alum :
To prepare, pour 100 mL of distilled water into a clean and dry beaker, then add a pinch of alum powder and stir with a glass rod until well combined. As soon as the alum is dissolved in water, a real solution is generated.
CONCLUSION
When a substance dispersed in a solvent has a particle size of less than 10-9 m or 1 nm, it is considered a true solution. Particles of real solution are invisible to the naked eye and cannot be filtered using filter paper.
Here are a few examples:
- Glucose solution in water
- Salt dissolved in Water