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What is the difference between physisorption and non activated chemisorption?
Wiki User
∙ 13y ago
Physisorption Chemisorption Forces of attraction are vander Waals' forces Forces of attraction are chemical bond forces Low enthalpy of adsorption (20 - 40 k.J/mole) High enthapy of adsorption (200 - 400 k.J/mole) This process is observed under conditions of low temperature This process takes place at high temperatures It is not specific It is highly specific Multi-molecular layers may be formed Generally, monomolecular layer is formed This process is reversible This process is irreversible
Wiki User
∙ 13y ago
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Why Physisorption is multilayered and chemisorption is monolayered?
physisorption involves van der wall attractive forces between adsorbent and adsorbed , This may result on the accumulation of many layers of the molecules on the surface. Chemosorption involves formation of chemical bonds between adsorbent and adsorbed molecule. Adsorbent have some functional groups or atoms on its surface with unsatisfied valences, once these valences are satisfied they don't undergo bond formation with more adsorbed molecules and only single layer is formed.
What is an activated complex?
An activated complex is a transitional structure, in an energetically excited state, which forms between the reactants of a chemical reaction and breaks down to form the products.
What is the difference between activated charcoal and deactivated charcoal?
Activated carbon, also called activated charcoal, activated coal, or carbo activatus, is a form of carbon processed to be riddled with small, low-volume pores that increase the surface area available for adsorption or chemical reactions.[1] Activated is sometimes substituted with active.Due to its high degree of microporosity, just one gram of activated carbon has a surface area in excess of 500 m2, as determined by adsorption isotherms of carbon dioxide gas at room or 0.0 °C temperature. An activation level sufficient for useful application may be attained solely from high surface area; however, further chemical treatment often enhances adsorption properties.Activated carbon is usually derived from charcoal.
What is the basic difference between catalase and peroxidase?
Catalase is a member of the peroxidase family. Catalase generates water and oxygen while peroxidase generates water and an activated donor molecule. Thus, peroxidase could refer to more than one enzyme.
What is the difference between galvanizing and electroplating?
What is the difference between electroplating and galvanising
Is adsorption of oxalic acid on charcoal physisorption or chemisorption?
The adsorption of oxalic acid on charcoal is typically considered to be physisorption. Physisorption involves weak van der Waals forces between the adsorbate (oxalic acid) molecules and the surface of the adsorbent (charcoal). Chemisorption, on the other hand, involves stronger chemical bonds and typically requires more energy.
Why Physisorption is multilayered and chemisorption is monolayered?
physisorption involves van der wall attractive forces between adsorbent and adsorbed , This may result on the accumulation of many layers of the molecules on the surface. Chemosorption involves formation of chemical bonds between adsorbent and adsorbed molecule. Adsorbent have some functional groups or atoms on its surface with unsatisfied valences, once these valences are satisfied they don't undergo bond formation with more adsorbed molecules and only single layer is formed.
Why does physisorption decrease with the increase of temperature?
there are vanderwaals forces between the moleculs and a solid surface.
What is the difference between solenoid valve and control valve?
I believe that servo is motorized and solenoid is magnetically activated.
What is the difference between distributed load A and B in plaxis software?
They can be scaled and activated independently, as far as I know.
What is the difference between the clone wars and star wars voice activated R2D2?
nothing is different, they use the same recoreded voice from the old movies.
When facebook was activated in Bangladesh?
between 2003 to 2009
What are the differences between active low and active high SR flip flop?
Hello The difference between an active low and an active high SR flip-flop is that with the active low SR flip-flop, the system is activated when the inputs to system are zeros while with the active high SR flip-flop, the system is activated when the inputs to the system are ones.
What does it means that a molecule is activated?
You may be talking about the activated complex, which is a kind of unstable "molecule" that is a transition state between the products and the reactants in a reaction.
What is difference between Microsoft window 7 enterprise and Microsoft window 7 ultimate?
Enterprise use different activation procedure and requires a dedicated VLK server. Ultimate can be activated through Internet.
What is an activated complex?
An activated complex is a transitional structure, in an energetically excited state, which forms between the reactants of a chemical reaction and breaks down to form the products.
What is the difference between a power vented gas water heater and a standard gas water heater?
The difference between a mobile gas water heater and a standard gas water heater is that a MH unit will use an outside air intake for combustion. That is the most important difference.
