Yaad Krlo

Difference between adsorption and absorption:- Sorption:-  If the adsorption and absorption takes place simultaneously then the process is named as sorption. Negative adsorption:-  When the concentration of the adsorbate is more on the surface of adsorbent then in the bulk, it is called adsorption if the concentration of adsorbate increases in the bulk after adsorption it is called negative adsorption. Factors affecting the adsorption of gases by solids:- Nature and surface area of adsorbent:- at the same temperature greater is the surface area of adsorbent greater is theadsorption. Example charcol, silica are good adsorbent due their pourous structure and area. Nature of gas:- it is given that higher the critical temperature of the gas greater is its adsorption or more easily a gas is liquefiable or more soluble in water more is its adsorption. Tempreture:- adsorpation of any particular gas by some particular adsorbent is decreases with the increase in the tempr

Surface Chemistry:- is the branch of chemistry which deals with the study of the phenomena occurring at the surface or interface, at boundary separating two bulk phases. The results about surface studies can be obtained only by taking the clean surfaces. Definitions of certain terms:- Adsorption:- The phenomenon of attracting and retaining of the molecules of a substance on the surface of a liquid or solid into a higher concen ration of molecule on surface is called adsorption. The substance which is adsorbed on the surface is called adsorbate and the substance on which it is adsorbed is called adsorbent. Desorption:- The reverse process; removal of the adsorbed substances from the surface is called. Desorption (it can be done by heating or reducing pressure) Examples of adsorption in its Favor:- To the solution of an organic dye such as methylene blue, add animal charcoal and stir it is observed that the intensity of the colour in the solution decreases showing some amount

What is Solenoid? Let us consider a solenoid, such that its length is large as compared to its radius. Here, the wire is wound in the form of helix with very little gap between any two turns. Also, the wires are enameled, thus rendering them insulated from each other. As a result, each turn can be taken as a closed circular loop. The magnetic field thus generated is equivalent to that generated by a circular loop and the total magnetic field generated by the solenoid can be given as the vector sum of force generated by each such turn. The magnetic field lines generated inside a finite solenoid has been shown in the figure below. We can see from the figure that the magnetic field inside the solenoid is uniform in nature and is along the axis of the solenoid. The field at the exterior at any point immediate to the solenoid is very weak and the field lines cannot be seen near the close vicinity. It is important to note that the field inside it is parallel to its axis at every