What are macromolecular colloids?

Asked By: Erwin Dragstra | Last Updated: 11th May, 2020
Category: science chemistry
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Multimolecular colloids are formed by the aggregation of a large number of simple molecules, macromolecular colloids consists of macromolecules having size in the colloidal range. On the other hand, associated colloids also called micelles, are generally electrolytes. They exist as ions at low concentration.

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Consequently, what are Multimolecular colloids and macromolecular colloids give examples?

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Multimolecular colloids Macromolecular colloids
Example: gold sol / sulphur sol (Any one) Example: starch, cellulose, proteins, enzymes, polythene, nylon, polystyrene, synthetic rubber (Any one)

Secondly, what are associated colloids give an example? Association colloids are micro-heterogeneous systems in which the particles of the colloidal dispersed phase (micelles) are formed by the agglomeration of molecules or ions of the substance dissolved in the dispersion medium. Examples are soap, synthetic detergents, organic dyes, tanning agents and alkaloids.

Just so, what are associated colloids?

Associated Colloids (Micelles): Associated colloids are those colloids which behave as normal strong electrolytes at low concentrations but exhibit colloidal properties at higher concentrations due to the formation of aggregated particles.

What are Lyophobic colloids?

Lyophobic colloids are liquid hating colloids (Lyo means solvent and phobic means hating). When these colloids are mixed with the suitable liquid, very weak force of attraction exists between colloidal particles and liquid and system does not pass into colloidal state readily.

38 Related Question Answers Found

What do you mean by Multimolecular colloids?

Definition of Multimolecular Colloids. As the colloidal particles are now made up of many atoms or molecules, it is now called multimolecular colloids. For example, a multimolecular colloid formed of a vast number of gold atoms of different sizes in a gold sol.

What is difference between Multimolecular and macromolecular colloids?

Multimolecular colloids are formed by the aggregation of a large number of simple molecules, macromolecular colloids consists of macromolecules having size in the colloidal range. On the other hand, associated colloids also called micelles, are generally electrolytes. They exist as ions at low concentration.

What are emulsions what are their different types?

Emulsions are colloidal solutions with both dispersed phase and dispersion medium being liquid. Thus, finely divided droplets of one liquid are dispersed in another medium. Emulsions can be formed from any two imiscible liquids. Two types of emulsions include oil in water emulsion and water in oil emulsion.

What is observed when an electric current is passed through a Sol?

(iii) When electric current is passed through a colloidal sol, the colloidal particles move towards oppositely charged electrode, where they lose their charge and are coagulated. The process is known as electrophoresis.

What is meant by Tyndall effect?


The Tyndall effect is the scattering of light as a light beam passes through a colloid. The individual suspension particles scatter and reflect light, making the beam visible. As with Rayleigh scattering, blue light is scattered more strongly than red light by the Tyndall effect.

How are colloids classified on the basis of?

Colloids are classified into lyophilic sols and lyophobic sols. In lyophilic sols, the dispersed phase particles have great affinity (or love) for the dispersion medium. These sols are reversible. Examples include gum, gelatin, starch, proteins and rubber etc.

What is the difference between coagulation and peptization?

Peptization and coagulation are chemical processes that take place in colloidal dispersions. The main difference between peptization and coagulation is that peptization involves the breakdown of a precipitate in order to form colloids whereas coagulation includes the formation of aggregates in a colloidal dispersion.

What is the difference between Sol and gel?

Sol: The liquid state of a colloidal solution is called the sol. Gel: The solid or semi-solid (Jelly like) stage of a colloidal solution is called the gel. The present post discusses about the Difference between Sol and Gel. Definition: The liquid state of a colloidal solution is called sol.

What type of colloid is smoke?

Colloids can be made from almost any combination of gas, liquid, and solid. The particles of which the colloid is made are called the dispersed material. Any colloid consisting of a solid dispersed in a gas is called a smoke. A liquid dispersed in a gas is referred to as a fog.

What are the 5 types of colloids?


The types of colloids includes sol, emulsion, foam, and aerosol.
  • Sol is a colloidal suspension with solid particles in a liquid.
  • Emulsion is between two liquids.
  • Foam is formed when many gas particles are trapped in a liquid or solid.
  • Aerosol contains small particles of liquid or solid dispersed in a gas.

What are the applications of colloids?

A colloid is used as thickening agents in industrial products such as lubricants, lotions, toothpaste, coatings, etc. In the manufacture of paints and inks, colloids are useful. In ball-point pens, the ink used is gel (liquid-solid colloid).

How do you make colloids?

However, there are two principal ways of preparation of colloids: Dispersion of large particles or droplets to the colloidal dimensions by milling, spraying, or application of shear (e.g. shaking, mixing, or high shear mixing).

Is ink a colloid?

A sol is a colloid made out of very small solid particles in a continuous liquid medium. Sols are quite stable and show the Tyndall effect. Examples include blood, pigmented ink, cell fluids, paint, antacids and mud.

Why lyophobic colloids are irreversible?

Lyophilic : Reversible, because on evaporating the liquid, the residue left will passes into colloidal state on addition of liquid. Lyophobic : Irreversible, because on evaporating the liquid, the residue left cannot be converted into solution on mere addition of liquid.

What is hydrophilic sol?


Hydrophillic sols are water loving sols. When these sols are mixed with the suitable liquid, high force of attraction exists between colloidal particles and liquid. This result in formation of very stable solution called hydrophillic sol. These sols are formed by substances like gums, starch and proteins.

What is Lyophilic Sol?

(i) Lyophilic sols(solvent loving):
They are those in which the dispersed phase exhibits a definite affinity for the dispersion medium(liquid) or the solvent. Dispersion of starch, gum, & protein in water. The affinity of sol particles for the medium is due to hydrogen bonding with water(dispersion medium).

What is colloid gel?

n a colloid in a more solid form than a sol
Synonyms: gel Types: hydrogel. a colloidal gel in which water is the dispersion medium. Type of: colloid. a mixture with properties between those of a solution and fine suspension.