What is a peptization in chemistry?

What is a peptization in chemistry?

Peptization or deflocculation is the process of converting precipitate into colloid by shaking it with a suitable electrolyte called peptizing agent. This is particularly important in colloid chemistry or for precipitation reactions in an aqueous solution.

What is Peptisation in chemistry class 12?

Peptization is the process of formation of colloidal sol in which conversion of fresh precipitate into colloidal particles by shaking it with the dispersion medium with the help of a small amount of suitable electrolyte. The electrolyte which is added is called a peptizing agent.

What is Peptisation give example?

Peptization utilizes the charges to produce colloids from the precipitate. The electrolyte used in the process is called a peptizing agent. Example: When the ferric chloride is added to the precipitate of ferric hydroxide, the hydroxide precipitate transfer to the sol by absorbing ferric ions.

What is peptization Class 11?

Peptization refers to the formation of stable colloidal solution. A precipitate is converted into colloidal solution. This is achieved by shaking precipitate with dispersion medium in the presence of small amount of electrolyte. Video Explanation.

What are peptizing agents?

1. n. [Drilling Fluids] A product that enhances dispersion of a substance (such as clay) into colloidal form.

What is peptization in BYJU’s?

The process of converting a precipitate into colloidal sol by shaking with dispersion medium in the presence of a small amount of electrolyte​ is called peptization.

What is Peptizing agent?

What is gold number chemistry?

The Gold Number is the minimum weight (in milligrams) of a protective colloid required to prevent the coagulation of 10 ml of a standard hydro gold sol when 1 ml of a 10% sodium chloride solution is added to it. It was first used by Richard Adolf Zsigmondy in 1901.

Why is Peptizing agent added?

Peptising agent is added to convert precipitate into colloidal solution.

What are emulsions 12?

Emulsion Examples Emulsions basically consist of a dispersion of two liquids that are immiscible with each other. One of the liquids act as the dispersion medium and the other will act as the dispersed phase. In simple words, emulsions are colloids in which both the dispersed phase and dispersion medium are liquids.

What is coagulation chemistry?

Coagulation is a chemical process used to neutralize charges and form a gelatinous mass to trap (or bridge) particles, thus forming a mass large enough to settle or be trapped in a filter. The words “coagulation” and “flocculation” are often used interchangeably, but they refer to two distinct processes.

What is the difference between coagulation and peptization?

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.

Why colloidal medicines are more effective?

Large surface area of Colloids enhance their absorption in the body and therefore increases the effectiveness of medicines given in colloidal form.

Is milk an emulsion?

Milk is a milk fat (liquid phase) emulsion of water. An emulsion may be described as a colloid consisting of two or more non-homogeneous liquid types, in which the dispersion of the various liquid forms is concentrated in one of the liquids.

What is emulsion in pharmacy?

Pharmaceutical emulsions are liquid disperse systems in which the dispersed phase is composed of small globules of a liquid distributed throughout a vehicle in which it is immiscible.

What is electrophoresis chemistry?

​Electrophoresis Electrophoresis is a laboratory technique used to separate DNA, RNA or protein molecules based on their size and electrical charge. An electric current is used to move the molecules through a gel or other matrix.

What is peptization give 12 example?

Peptisation is the process of converting a precipitate into colloidal particles by adding suitable electrolyte. The electrolyte is known as peptising agent. It is stabilising agent. For example, the addition of small amount of dil. HCl to stannic oxide precipitate gives a stable sol of stannic oxide.

What is the difference between peptization and precipitation?

Answer. Peptization is the formation of a colloidal dispersion from a precipitation. 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 hardy Schulze rule?

Hardy schulze rule states that greater is the valency of of oppositely charged ion of the electrolyte being added, Faster is coagulation. The principle is electrostatic forces of attraction. Greater the valency of flocculationg ion, greater is the coagulation power.