What is the difference between peptization and coagulation?

What is the difference between peptization and coagulation?

Formation of sol from the precipitate by the addition of electrolyte is known as peptization. While the conversion of a sol into a precipitate is known as coagulation. It involves the neutralization of a sol particle to form a suspension and this represents the coagulation.

Is coagulation same as precipitation?

Coagulation is the formation of larger aggregates from solid substances, that is, no change in phase. Precipitation, the formation of solid, undissolved species, implies a phase transition. In chemical terms, coagulation and precipitation are distinctly different processes.

Can peptization cause coagulation?

Small amount of electrolyte if required for the formation of sols by peptization while a large amount of electrolyte cause coagulate caused by the neutralization of sol particles.

What is meant by peptization?

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 the difference between occlusion and mixed crystal formation?

Mixed-crystal formation may occur in both colloidal and crystalline precipitates, but occlusion and mechanical entrapment are confined to crystalline precipitates.

Is coagulation and flocculation same?

Coagulation is the destabilization of colloidal particles brought about by the addition of a chemical reagent called as coagulant. Flocculation is the agglomeration of destabilized particles into microfloc and after into bulky floccules which can be settled called floc.

How does electrolyte cause coagulation as well as peptization of colloids?

Electrolytes provide oppositely charged ions which can cause coagulation of colloidal solution. This breaks up the precipitate into smaller particles of the size of colloid.

What is meant by Peptization in gravimetric analysis?

Peptization is the process responsible for the formation of stable dispersion of colloidal particles in the dispersion medium. In other words, it may be defined as a process of converting a precipitate into a colloidal sol by shaking it with dispersion medium in the presence of a small amount of electrolyte.

Why electrolyte is added in peptization?

Note:Cause of peptization: As the electrolyte is added to a newly precipitated substance, the particles of the precipitate specially adsorb one specific kind of particles of the electrolyte and get dispersed because of electrostatic repulsion. This gives particles of colloidal size.

What are different methods of peptization?

Other examples of peptization includes using ferric chloride as the peptizing agent to mix ferric hydroxide into water, and using silver nitrate or potassium iodide as the peptizing agent to form a colloidal solution with silver iodide.

What is the difference between agglutination and coagulation?

Agglutination means clumping of RBCs together due to antigen-antibody reaction (ABO incompatibility). Agglutination causes RBCs to undergo clumping and intravascular hemolysis. Blood coagulation, or clotting, is the process of converting blood into a semisolid jelly-like substance.

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. 1. What is Peptization 2. What is Coagulation 3. What is the Difference Between Peptization and Coagulation

What is the difference between coagulation and precipitate?

It is the gelling or clumping of the particle. Electrolyte is added whose one ion in common with one ion of precipitate. Coagulation is carried out by an electrolyte whose one ion is oppositely charged to one ion of the sol. The particles of precipitate absorb common ion of the electrolyte.

What is the mechanism of coagulation?

Coagulation is carried out by an electrolyte whose one ion is oppositely charged to one ion of the sol. The particles of precipitate absorb common ion of the electrolyte. The particles of the sol take up the ions which are oppositely charged and get neutarlised.

What is peptization and how is it formed?

Peptization is the formation of stable colloids in a dispersion medium. This results in a colloidal dispersion. A colloidal dispersion is a heterogeneous system which is made up of a dispersed phase and a dispersion medium. The dispersed phase is a phase in a two-phased system.