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Which of the following can adsorb larger volume of hydrogen gas?
  • a)
    Finely divided platinum
  • b)
    Colloidal solution of palladium
  • c)
    Small pieces of palladium
  • d)
    A single metal surface of platinum
Correct answer is option 'B'. Can you explain this answer?
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Which of the following can adsorb larger volume of hydrogen gas?a)Fine...
In colloidal solution the particles are suspended and are more dispersed than powdered form hence adsorption is maximum.
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Which of the following can adsorb larger volume of hydrogen gas?a)Fine...
Answer:

To understand which substance can adsorb a larger volume of hydrogen gas, we need to consider the properties of each option given in the question.

Finely divided platinum:
Finely divided platinum refers to platinum that has been broken down into very small particles. The high surface area of these particles allows for a larger number of active sites for hydrogen gas adsorption. However, the overall volume of hydrogen gas that can be adsorbed may not be as high as in other options due to the limited space available between the particles.

Colloidal solution of palladium:
A colloidal solution of palladium consists of palladium particles dispersed in a liquid medium. Similar to finely divided platinum, the high surface area of the particles allows for a larger number of active sites for hydrogen gas adsorption. Additionally, the liquid medium provides more space for the hydrogen gas to be adsorbed, resulting in a larger overall volume of adsorbed hydrogen gas.

Small pieces of palladium:
Small pieces of palladium refer to solid palladium material that has been broken down into smaller fragments. Like finely divided platinum and colloidal palladium, small pieces of palladium provide a larger surface area for hydrogen gas adsorption. However, the overall volume of hydrogen gas that can be adsorbed may be limited by the available space between the fragments.

A single metal surface of platinum:
A single metal surface of platinum refers to a bulk piece of platinum without any divisions or fragments. While the surface area for hydrogen gas adsorption may be limited compared to the other options, the lack of divisions or fragments allows for a higher overall volume of hydrogen gas to be adsorbed due to the larger available space.

Conclusion:
Among the given options, the colloidal solution of palladium is likely to adsorb a larger volume of hydrogen gas. This is because the combination of high surface area provided by the dispersed palladium particles and the additional space provided by the liquid medium allows for more hydrogen gas to be adsorbed.
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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. The particles in suspension will repel each other, thereby preventing the formation of aggregates that are larger than colloidal dimensions. This statement explains

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. When Van der Waals forces are greater than forces due to the surface charge on the particles,

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Which of the following can adsorb larger volume of hydrogen gas?a)Finely divided platinumb)Colloidal solution of palladiumc)Small pieces of palladiumd)A single metal surface of platinumCorrect answer is option 'B'. Can you explain this answer?
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