What is peptization give example?
Answer: 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 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 gravimetry peptization?
Peptization is the process of forming stable colloids by using an electrolyte to break up a precipitate and disperse it into the colloid. So while coagulation uses charges to disrupt the colloid and form an aggregate, peptization uses charges to form a colloid from a precipitate.
What is peptization and how it is avoided?
Peptization should be avoided. (Peptization is the process by which a coagulated precipitate is returned to its colloidal state.) Peptization can be minimized by washing a precipitate with a solution of an electrolyte that is volatilized during an ensuing drying step.
What is peptization give 12 example?
By adding suitable electrolyte, the method of converting a precipitate into a colloidal solution is called peptization. The addition of a small amount of dilute hydrochloric acid to stannic oxide precipitate gives a stable sol of stannic oxide is an example for the peptization.
What is peptization 12th?
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. This gives particles of colloidal size.
What is gold no and peptization?
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.
What is Peptization 12th?
How does Peptization happen?
Peptization is a process of passing of a precipitate into colloidal particles on adding suitable electrolyte. The electrolyte added is known as peptizing agent. A precipitate of silver iodide can be peptized by shaking with a dilute solution of silver nitrate or KI. …
What is Peptisation and Peptising agent?
In other words it may be defined as a process of converting a precipitate into colloidal sol by shaking it with dispersion medium in the presence of small amount of electrolyte. The electrolyte used in this process is called as peptizing agent.
What is the reason 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 the significance of reciprocal of gold number?
Smaller thegold number, greater is its protective power. Hence, the reciprocal of gold number is a direct measure of the protective power of the colloid.
How is a precipitate of silver iodide peptized?
Ex: A reddish-brown colored colloidal solution is obtained by adding a small quantity of ferric chloride solution to the freshly precipitated ferric hydroxide. A precipitate of silver iodide can be peptized by shaking with a dilute solution of silver nitrate or KI.
What is the purpose of peptization in dispersion medium?
Peptization. Peptization is the process responsible for the formation of stable dispersion of colloidal particles in dispersion medium. In other words it may be defined as a process of converting a precipitate into colloidal sol by shaking it with dispersion medium in the presence of small amount of electrolyte.
How to define the process of peptization in chemistry?
> Define peptization. | Chemi… Define peptization. Peptization is the process responsible for the formation of stable dispersion of colloidal particles in the dispersion medium.
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The spot price of Silver is the current price in the Precious Metals marketplace at which a raw ounce of Silver can be bought and sold for immediate delivery. The spot price fluctuates constantly, making it important for investors to stay up to date on current events, market conditions and other performance indicators,…