Question

Distinguish among true solution, suspension. And colloid in a tabular form under the following heads. 1.Stability. 2.Filterability. 3.Type of mixture

Answer 1

True Solution, Suspension and Colloidal Solution

Based on distinct properties, solutions can be classified into True Solution, Suspension and Colloid. This classification is necessary to understand concepts of colloidal solutions and distinguish it from rest of the types.

True Solution

True Solution is a homogeneous mixture of two or more substances in which substance dissolved (solute) in solvent has the particle size of less than 10-9 m or 1 nm. Simple solution of sugar in water is an example of true solution. Particles of true solution cannot be filtered through filter paper and are not visible to naked eye.

Suspensions

Suspension is a heterogeneous mixture in which particle size of one or more components is greater than 1000nm.When mud is dissolved in water and stirred vigorously, particles of mud are distributed evenly in water. After some time, the particles of this solution settle under water due to influence of gravity. This solution is an example of Suspension (see picture below). Contrary to True Solution,particles of suspension are big enough to be seen with naked eye.