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What is the difference between adsorption and condensation?
Adsorption is when a substance gets absorbed INTOthe surface of another substance.Condensation is when a substance collects ON the surface of another substance.
Does physical adsorption have a low adsorption enthalpy?
Yes, physical adsorption typically has a low adsorption enthalpy due to weak van der Waals forces between the adsorbate and adsorbent. These interactions are reversible and non-specific, leading to lower enthalpies compared to chemical adsorption.
Difference between contaminant adsorption and absorption in saturated ground water?
Contaminant adsorption in saturated groundwater refers to contaminants sticking to the surface of soil particles, while absorption refers to contaminants being taken up and stored within the soil particles themselves. Adsorption involves a surface reaction, while absorption involves a bulk reaction. Both processes can help remove contaminants from groundwater but may have different mechanisms and effectiveness depending on the specific contaminants and soil properties.
What are the important assumptions of the BET theory?
The Brunauer-Emmett-Teller (BET) theory assumes that adsorption occurs as a multilayer formation on a solid surface. It also assumes that there is no lateral interaction between the adsorbed molecules and that the surface must be energetically homogeneous. Lastly, the BET theory assumes that the adsorption equilibrium of each layer obeys the Gibbs adsorption isotherm.
Why adsorption is exothermic process?
adsorption means that the molecules of one phase are present in higher concentration at the surface of the second phase.ex.inert gases on charcoalwhen the temperature is increasing the adsorption decreases.so , we can say the adsorption is always exothermic.
What is a biosorption?
A biosorption is another term for a bioabsorption, the process by which substances are absorbed by the tissues and organs of organisms.
What is the difference between adsorption and condensation?
Adsorption is when a substance gets absorbed INTOthe surface of another substance.Condensation is when a substance collects ON the surface of another substance.
Does physical adsorption have a low adsorption enthalpy?
Yes, physical adsorption typically has a low adsorption enthalpy due to weak van der Waals forces between the adsorbate and adsorbent. These interactions are reversible and non-specific, leading to lower enthalpies compared to chemical adsorption.
What is the difference between the Freundlich BET and Langmuir adsorption isotherms?
There are a few differences, but the main one is that Langmuir can only be used for surfaces which are cover by only one layer of gas and the BET surface area is calculated using the multilayer model.
How does adsorption work in reality?
In reality, adsorption is a process where molecules in a gas or liquid adhere to the surface of a solid. This occurs due to the attractive forces between the molecules and the solid surface. Adsorption is used in various applications such as purifying gases, wastewater treatment, and catalysts.
Does chemical adsorption have a high adsorption enthalpy?
no
What is the different between desorption and adsorption?
desorption-changing from an adsorbed state on a surface to a gaseous or liquid state and adsorption-the accumulation of molecules of a gas to form a thin film on the surface of a solid
Is the adsorption capacity depend upon porosity of adsorbent?
Yes, the adsorption capacity of an adsorbent is influenced by its porosity. A higher porosity provides more surface area for adsorption to occur, resulting in a greater adsorption capacity. Therefore, materials with higher porosity generally exhibit higher adsorption capabilities.
Why adsorption occur?
Adsorption occurs due to the attractive forces between molecules of a solid surface and molecules or ions in a fluid or gas. These attractive forces lead to the accumulation of the molecules or ions on the surface of the solid, creating a thin layer. Adsorption can be influenced by factors such as the surface area and nature of the adsorbent and the concentration and properties of the adsorbate.
Difference between contaminant adsorption and absorption in saturated ground water?
Contaminant adsorption in saturated groundwater refers to contaminants sticking to the surface of soil particles, while absorption refers to contaminants being taken up and stored within the soil particles themselves. Adsorption involves a surface reaction, while absorption involves a bulk reaction. Both processes can help remove contaminants from groundwater but may have different mechanisms and effectiveness depending on the specific contaminants and soil properties.
Why physical adsorption is reversible process?
adsorption is processs of accumulation of liquid/gases on solid surface. reversible adsorption is seen in physical adsorption where increase in pressure increases the adsorption and decrease in pressure decrease adsorption of molecules to surface that is desorption takes place
Is adsorption spontaneous?
Yes, adsorption is typically a spontaneous process because it involves the attraction of molecules to a surface due to the energetically favorable interactions between them. This can result in a decrease in free energy and an increase in the stability of the system.
