What kind of forces exists between adsorbate and adsorbent in physisorption?
Physisorption is defined as adsorption in which force between adsorbate and adsorbent is physical van der Waals force also known as London force.
Adsorbate is represented by which spheres in the following diagram.
The adsorbent is that substance that gathers/adsorb molecules on its surface, and adsorbate is that substance that gets gather/adsorb by itself on the surface of the absorbent.
Hence, Black molecules should be adsorbate.
Which phenomenon is represented by the following diagram?
Adsorption is a surface phenomenon where concentration of the molecules, is more on the surface than in the core.
Which of the following statement is correct about Langmuir’s adsorption?
At the maximum adsorption, only a monolayer is formed: molecules of adsorbate do not deposit on other, already adsorbed, molecules of adsorbate, only on the free surface of the adsorbent.
Why shoes, purses and leather items have silica gel pouches kept in them?
Solids, particularly in a finely divided state, have a large surface area and so silica gel is a good adsorbent and keeps the leather dry and free of moisture.
The relation between extent of adsorption (x/m) and pressure at constant temperature is called as:
Freundlich adsorption isotherm gives an empirical relationship between the quantity of gas adsorbed by the unit mass of solid adsorbent (x/m) and pressure at a specific temperature.
Which of the following is the reason for adsorption?
There is an unbalanced attractive force of adsorbent are responsible for attracting the adsorbate particles on its surface.
Which of the following options are correct?
The formation of micelles takes place only above a particular temperature called Kraft temperature (Tk) and above a particular concentration called critical micelle concentration (CMC).
On dilution, these colloids revert back to individual ions.
Hence, option A, C is correct.
Adsorption is the phenomenon in which a substance:
Adsorption is the adhesion (accumulation) of molecules of the gas, liquid, or dissolved solid particles (adsorbate) onto the surface (adsorbent)
Freundlich adsorption isotherm is a plot between:
The plot between the extent of adsorption (x/m) against the pressure of gas (P) at constant temperature (T) is called the adsorption isotherm.