Differbetween
- What is Peptization and example?
- What is Peptization explain?
- What is the cause of Peptization?
- What is meant by peptization of colloidal sols?
- What is hardy Schulze rule?
- What are peptizing agents?
- How is Peptization prevented?
- What is electrical dispersion?
- What is the reason for Brownian movement?
- What is Delta formation in chemistry?
- What is the difference between coagulation and peptization?
- What is zeta potential Ncert?
What is Peptization and example?
Peptization is the method of producing stable colloids using an electrolyte to split up and distribute a precipitate into the colloids. ... 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 explain?
Peptization or deflocculation is the process responsible for the formation of converting precipitate into colloid by shaking with it an electrolyte. This is particularly important in colloid chemistry or for precipitation reactions in an aqueous solution.
What is the cause of Peptization?
Cause of peptization:– As electrolyte is added to a freshly precipitated substance, the particles of the precipitate preferentially adsorbs one particular type of ions of the electrolyte. As a result they get dispersed due to electrostatic repulsions.
What is meant by peptization of colloidal sols?
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 hardy Schulze rule?
The required amount of electrolyte for the coagulation of a definite quantity of colloidal solution is dependent on the valency of the coagulating ion (which is the ion that holds a charge which is opposite to the charge of the colloidal particles).
What are peptizing agents?
A product that enhances dispersion of a substance (such as clay) into colloidal form. Peptizing agents for drilling-mud clays are sodium carbonate, sodium metaphosphates, sodium polyacrylates, sodium hydroxide and other water-soluble sodium compounds, even common table salt, NaCl, if added at low concentration.
How is Peptization prevented?
neutral solution. Nitric acid is added to the wash liquid to maintain a high electrolyte concentration and to prevent peptization during the washing step. (Peptization is the formation of a colloid by dispersion of a precipitate. Colloids pass through filter crucibles while precipitates don't.)
What is electrical dispersion?
Electrical Dispersion Method Also known as “Bredig arch method “ Is a method of preparing colloids, especially metallic sols. ... The vapour condenses to the particles of colloidal size on cooling. The colloidal particles thus formed get dispersed in the medium to form a sol.
What is the reason for Brownian movement?
Brownian movement arises because of the impact of the molecules of the dispersion medium with the colloidal particles. Since the impacts of the molecules of the dispersion medium on the colloidal particles are unequal (i.e. unbalanced bombardment), the result is zig-zag motion.
What is Delta formation in chemistry?
As soon as river water comes in contact with sea water, the electrolytes present in sea water coagulate the suspended colloidal particles which ultimately settle down at the point of contact. Thus, the level of the river bed rises. As a result, water adopts a different course and delta is formed in due course of time.
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.
What is zeta potential Ncert?
Electro kinetic or Zeta Potential:- when one type of the ions of the electrolyte are adsorbed on the surface of colloidal particles it forms a “Fixed layer”. It attracts the opposite ions to form another layer called “diffused layer”. ... This potential difference is known as electro kinetic or zeta potential.
