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Video: Adsorption and Absorption Video Lecture - JEE

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FAQs on Video: Adsorption and Absorption Video Lecture - JEE

1. What is the difference between adsorption and absorption?
Ans. Adsorption is the process in which molecules or particles adhere to the surface of a solid or liquid, while absorption is the process in which one substance penetrates the bulk of another substance. In adsorption, the molecules remain on the surface, whereas in absorption, the molecules are taken up by the absorbing material.
2. How does adsorption occur?
Ans. Adsorption occurs when the attractive forces between the adsorbate (substance being adsorbed) and the adsorbent (surface on which adsorption occurs) are stronger than the attractive forces between the adsorbate molecules themselves. This leads to the accumulation of adsorbate molecules on the surface of the adsorbent.
3. What are the factors that influence adsorption?
Ans. Several factors influence adsorption, including the surface area of the adsorbent, the nature of the adsorbent and adsorbate, temperature, pressure, and concentration. Generally, higher surface area, stronger attractive forces, lower temperature, higher pressure, and higher concentration of the adsorbate promote adsorption.
4. Give an example of adsorption in daily life.
Ans. An example of adsorption in daily life is the use of activated charcoal to filter impurities from water or air. Activated charcoal has a large surface area with many adsorption sites, allowing it to trap and remove pollutants, odors, and contaminants through adsorption.
5. How is adsorption used in industrial processes?
Ans. Adsorption is widely used in various industrial processes, such as in catalysis, gas purification, separation of mixtures, and wastewater treatment. For example, activated carbon is used in the purification of natural gas by adsorbing impurities, while adsorbents like zeolites are used in the separation of gases and liquids.
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