Adsorption depends on the following factors;TemperaturePressureNature of the gas andNature of the adsorbent Effect of...
Author - Bhoomika Sheladiya
What is Adsorption? Adsorption is a surface phenomenon. The phenomenon of a higher concentration of any molecular species at...
This method is obtained by various chemical reactions such as double decomposition, oxidation, reduction, hydrolysis etc. the colloidal systems are not always formed in reactions capable of producing sols; they are formed under...
The preparation of colloidal solutions is that the dispersed particles have a size range of 1 mµ-200 mµ. The lyophilic sols can be easily prepared using colloidal materials such as starch, gelatin, etc. The lyophobic sols and...
A colloidal dispersion has been defined as a suspension of small particles in a continuous medium because of their ability to scatter light and very low osmotic pressure; these particles are much larger than simple small...
In some cases, one of the positive ions is missing from its lattice site, and the extra negative charge is balanced by some nearby metal ion acquiring two charges instead of one. It is, evidently, a deficiency of the metal ions...
Metal defects are also known as colour defects. It has been observed that if a crystal of NaCl is heated in sodium vapour, it becomes yellow. This yellow colour is due to the formation of a non-stoichiometric compound of sodium...
Frenkel defects arise when an ion occupies an interstitial position between the lattice points. It is shown in the...
Ideally, a perfect crystal has the same unit cell and contains the same lattice points throughout the crystal. Imperfection or defect is generally used to describe any derivation of the ideally perfect crystal crystals from the...
An ionic crystal contains N ions in which the removal of n cations and n anions from the interior of the crystal produces n Schottky defects.The different ways in which each kind of ion can be removed are given...
