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What is the type of charge on Agl colloidal sol formed when AgNO3 solution is added to KI solution?
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What is the type of charge on Agl colloidal sol formed when AgNO3 solu...
Negative charge because negatively charged I– ions will get adsorbed on Agl.
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What is the type of charge on Agl colloidal sol formed when AgNO3 solu...
Type of charge on Agl colloidal sol formed

When AgNO3 solution is added to KI solution, a white precipitate of AgI is formed. This precipitate can be separated by filtration, washed with water and then dispersed in water to form a colloidal sol. The type of charge on the AgI colloidal sol can be determined by considering the following factors:

Chemical reaction

AgNO3 + KI → AgI(s) + KNO3

The chemical reaction between AgNO3 and KI results in the formation of AgI precipitate. The AgI precipitate is insoluble in water and can be dispersed in water to form a colloidal sol. The AgI colloidal sol is formed due to the adsorption of AgI particles on the surface of water molecules.

Charge on AgI particles

The AgI particles in the colloidal sol are negatively charged. This is because when AgI is dispersed in water, it dissociates into Ag+ and I- ions. The Ag+ ions are adsorbed on the surface of water molecules and the I- ions are present in the solution. The negatively charged I- ions repel each other and prevent the AgI particles from coagulating.

Stabilization of colloidal sol

The AgI colloidal sol is stabilized by electrostatic repulsion between the negatively charged AgI particles. The repulsion between the particles prevents them from coming together and forming larger aggregates. The stability of the colloidal sol can be increased by increasing the surface area of the particles or by decreasing the interparticle distance.

In conclusion, the AgI colloidal sol formed by the addition of AgNO3 solution to KI solution has negatively charged AgI particles. This charge is due to the dissociation of AgI into Ag+ and I- ions, with the I- ions being present in the solution and causing the particles to be negatively charged. The stability of the colloidal sol is maintained by the electrostatic repulsion between the negatively charged particles.
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Read the passage given below and answer the following questions:Some colloids are stable by their nature, i.e., gels, alloys, and solid foams. Gelatin and jellies are two common examples of a gel. The solid and liquid phases in a gel are interspersed with both phases being continuous. In most systems, the major factor influencing the stability is the charge on the colloidal particles. If a particular ion is preferentially adsorbed on the surface of the particles, the particles in suspension will repel each other, thereby preventing the formation of aggregates that are larger than colloidal dimensions. The ion can be either positive or negative depending on the particular colloidal system, i.e., air bubbles accumulate negative ions, sulphur particles have a net negative charge in a sulphur sol, and the particles in a metal hydroxide sol are positively charged. Accumulation of charge on a surface is not an unusual phenomenon-dust is attracted to furniture surfaces by electrostatic forces. When salts are added to lyophobic colloidal systems the colloidal particles begin to form larger aggregates and a sediment forms as they settle. This phenomenon is called flocculation, and the suspension can be referred to as flocculated, or colloidally unstable. If the salt is removed, the suspension can usually be restored to its original state; this process is called deflocculation or peptization. The original and restored colloidal systems are called deflocculated, peptized, or stable sols. Why does a small amount of salt have such a dramatic effect on the stability of a lyophobic colloidal system? The answer lies in an understanding of the attractive and repulsive forces that exist between colloidal particles. Van der Waals forces are responsible for the attractions, while the repulsive forces are due to the surface charge on the particles. In a stable colloid, the repulsive forces are of greater magnitude than the attractive forces. The magnitude of the electrical repulsion is diminished by addition of ionized salt, which allows the dispersed particles to aggregate and flocculate. River deltas provide an example of this behaviour. A delta is formed at the mouth of a river because the colloidal clay particles are flocculated when the freshwater mixes with the salt water of the oceanQ. Colloidal solutions are stable due to

Read the passage given below and answer the following questions:Some colloids are stable by their nature, i.e., gels, alloys, and solid foams. Gelatin and jellies are two common examples of a gel. The solid and liquid phases in a gel are interspersed with both phases being continuous. In most systems, the major factor influencing the stability is the charge on the colloidal particles. If a particular ion is preferentially adsorbed on the surface of the particles, the particles in suspension will repel each other, thereby preventing the formation of aggregates that are larger than colloidal dimensions. The ion can be either positive or negative depending on the particular colloidal system, i.e., air bubbles accumulate negative ions, sulphur particles have a net negative charge in a sulphur sol, and the particles in a metal hydroxide sol are positively charged. Accumulation of charge on a surface is not an unusual phenomenon-dust is attracted to furniture surfaces by electrostatic forces. When salts are added to lyophobic colloidal systems the colloidal particles begin to form larger aggregates and a sediment forms as they settle. This phenomenon is called flocculation, and the suspension can be referred to as flocculated, or colloidally unstable. If the salt is removed, the suspension can usually be restored to its original state; this process is called deflocculation or peptization. The original and restored colloidal systems are called deflocculated, peptized, or stable sols. Why does a small amount of salt have such a dramatic effect on the stability of a lyophobic colloidal system? The answer lies in an understanding of the attractive and repulsive forces that exist between colloidal particles. Van der Waals forces are responsible for the attractions, while the repulsive forces are due to the surface charge on the particles. In a stable colloid, the repulsive forces are of greater magnitude than the attractive forces. The magnitude of the electrical repulsion is diminished by addition of ionized salt, which allows the dispersed particles to aggregate and flocculate. River deltas provide an example of this behaviour. A delta is formed at the mouth of a river because the colloidal clay particles are flocculated when the freshwater mixes with the salt water of the oceanQ. Gelatin is a ________________ colloidal system.

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What is the type of charge on Agl colloidal sol formed when AgNO3 solution is added to KI solution?
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