The distinction between a True solution and a Colloidal solution

A true solution is a homogeneous mixture of solute and solvent, the colloidal solution appears to be homogeneous but actually, it is a heterogeneous mixture of solute and solvent and a suspension is a heterogeneous mixture of a solid which is solute and is dispersed in a liquid medium or a gas medium.

If we compared particle visibility, in the case of a true solution, the solute particles of a true solution cannot be seen even with a microscope but the composition and properties of a true solution are the same throughout, the solute particles are very small in a true solution, also a true solution is clear and transparent and it does not scatter light. 

A solution is called a true solution because it contains all the particles in the right composition and is correctly dissolved so that a solution is known to be true. True solutions do not exhibit the Tyndall effect. The particle size is very small in true solutions, it’s not in the colloidal range but it’s even smaller than the colloidal range and thus these true solutions, therefore, do not exhibit Tyndall influence, as the particle is not large enough to disperse the light that is been incident on it. The size of particles in a true solution will be less than 1 nm in diameter and the size of particles in a colloidal solution will be larger than that of a true solution but smaller than suspension. The size range of particles in a colloidal solution will be 1 – 1000 nm in diameter; we know that the suspension is more stable. This is because suspension does not mix, in a suspension, the denser particles settle down at the bottom and make the solution stable. A true solution is stable, a suspension is unstable and a colloidal solution is stable. 

The main difference between Solution, Suspension, and Colloids are a solution is a homogeneous mixture, the Size of particles are very small (less than 1nm) and if we consider a suspension, the size of particles are large (more than 100nm) and it is a heterogeneous mixture, in case of colloids the size of particles is neither too small nor too large (1 – 100nm) and it is a heterogeneous mixture.

Solution: 

A  homogeneous mixture is composed of two or more substances. A solute is a material that is dissolved in another substance, known as a solvent, in such a mixture. which has a particle size of less than 1 nm Common examples of solutions are the sugar in water and salt in water solutions, soda water, etc. All of the components of a solution appear as a single phase.

Suspension:

A suspension is a finely distributed material in a liquid that has a heterogeneous combination. The solid is not dissolved in the liquid, Suspensions separate over time due to gravity. The solid settles on the ground or creates sediment in tanks or containers, for example. Examples of Suspensions are Slurry of sand in seawater, Orange juice.

Colloids:

A colloid is a heterogeneous system in which one material (distributed phase of colloidal particles) is dispersed in another substance (dispersion medium). In short, if the dispersion medium is solid then the colloid is known as a gel. The colloid is called sol if the dispersion medium is liquid or gas.

A mixture in which very small particles are distributed evenly throughout another substance. Particles in a suspension are larger than those in a solution but smaller than those in a solution. Paints, milk, and fog are colloids. Mayonnaise and blood are both examples of colloids.

Conclusion

True Solution: The particles of true solution are invisible to the naked eye and even under powerful microscopes. 

Colloidal Solution: Colloidal solution particles are invisible to the naked eye, but they can be seen under strong microscopes.

The characteristics of a true solution are:

• It is a homogeneous mixture.
• The solute parties cannot be seen with naked eyes and do not show the Tyndall effect.
• The solute particles if the solution cannot be separated by the filtration method.