12 Questions
Which of the following best describes absorption?
A fluid permeates or is dissolved by a liquid or solid.
What is the key characteristic of adsorption?
It is reversible, as it can be influenced by factors like heating or pH changes.
What is the primary function of Enterosgel Intestinal Adsorbent?
Treatment of diarrhea through oral intestinal adsorption.
What distinguishes absorption from adsorption?
Absorption involves the movement of substance into another compartment, while adsorption involves the tendency for materials to locate at a solid surface.
What is the primary mechanism by which adsorption occurs in porous molecules?
Van der Waals forces
Which of the following materials is a hard, granular, and porous adsorbent?
Silica gel
What type of compounds are typically hydrophilic and polar in nature?
Oxygen-containing compounds
What is the main requirement for adsorbents to have increased exposed surface area for adsorption?
Small pore diameters and high thermal stability
Which type of compounds are typically hydrophobic and non-polar in nature?
Carbon-based compounds
What is the primary reason for the use of activated alumina in adsorption?
Moisture adsorption
What type of interactions are responsible for adsorption in porous molecules?
Weak physical alterations
In which class of compounds are polar or non-polar functional groups present in a porous polymer matrix?
Polymer-based compounds
Study Notes
Absorption and Adsorption
- Absorption is a process in which a substance is taken in by a cell or organism, whereas adsorption is a surface phenomenon where a substance binds to a surface.
Adsorption Characteristics
- The key characteristic of adsorption is the concentration of a substance at a surface or interface.
Enterosgel Intestinal Adsorbent
- The primary function of Enterosgel Intestinal Adsorbent is to absorb toxins and other harmful substances from the gut.
Absorption vs Adsorption
- Absorption involves the uptake of a substance into the bulk of a material, whereas adsorption involves the concentration of a substance at a surface.
Adsorption Mechanism
- The primary mechanism by which adsorption occurs in porous molecules is through van der Waals interactions or electrostatic forces.
Adsorbent Materials
- Activated carbon is a hard, granular, and porous adsorbent.
Hydrophilic and Hydrophobic Compounds
- Hydrophilic compounds are typically polar in nature, whereas hydrophobic compounds are typically non-polar in nature.
Adsorbent Surface Area
- The main requirement for adsorbents to have increased exposed surface area for adsorption is a high surface-to-volume ratio.
Functional Groups in Polymers
- Polar or non-polar functional groups are present in a porous polymer matrix in the class of compounds known as polymeric adsorbents.
Activated Alumina
- The primary reason for the use of activated alumina in adsorption is its high surface area and affinity for binding ions and molecules.
Adsorption Interactions
- The primary interactions responsible for adsorption in porous molecules are van der Waals interactions and electrostatic forces.
Test your knowledge on the differences between adsorption and absorption, understanding of adsorption phenomena, medical and pharmaceutical applications, and factors controlling adsorption through Langmuir adsorption isotherms.
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