what are the types of colloidal solutions? define each type. Is blood a colloid? if yes which type of colloid??
Answers
Answer:
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Explanation:
TYPES OF COLLOIDS
1. Multimolecular Colloids
When the dissolution of smaller molecules of substance or a large number of atoms takes place, they combine to form a species whose size is in the range of colloidal size. The species formed is known as the multimolecular colloids.
For example, Sulphur solution contains particles which have thousands of S8.
2. Macromolecular Colloids
In this type of colloids, the macromolecules form a solution with a suitable solvent. The size of the particles of this macromolecular solution lies in the range of colloidal particles size. Thus this solution is also known as the macromolecular colloids. The colloids formed here are similar to that of the actual solution in many respects and are very stable.
Example: Starch, proteins, enzymes, and cellulose are the naturally occurring macromolecular colloids whereas polyethene, synthetic rubber, etc. are the synthetic macromolecules.
3. Associated Colloids
Some substances act as a strong electrolyte when they are in low concentrations, but they react as colloidal sols when they are in high concentration. In higher concentration, particles aggregate showing a colloidal behaviour. These aggregated particles are known as the micelles. They are also known as the associated colloids. The formation of the micelles occurs above a particular temperature called the Kraft temperature (Tk) and also above a specific concentration called the critical micelle concentration. These colloids can be reverted by diluting it. Examples of some associated colloids are soaps and synthetic detergents.
Blood is a colloidal solution of an albuminoid substance. The styptic action of alum and ferric chloride solution is due to coagulation of blood forming a clot which stops further bleeding.
Answer:
there are three ypes of colloid
names are
- multimolicular
- macromolicular
- associated