Notes On Gaseous State This page provides you all details about the gaseous state of BSc standard. Concerned problems will be solved at the end of each concept. Continue till the end to find the easiest explanation of every concept you need in this regard . Postulates of Kinetic Theory of Gases: 1. All gas consist of a very large number of minute particles, called molecules. 2. The gas molecules are extremely small in size and are separated by large distance. The actual volume of the gas molecules is thus negligible as compared to the total volume occupied by the gas. 3. The pressure exerted by the gas is due to the bombardment of the molecules on the walls of the vessel. 4. The gas molecules collide with one another and also with the walls of the vessels. These collisions are perfectly elastic and there is no loss of energy during these collisions. 5. The distance between the gas molecules are very large. Thus, there is no effective force of attraction or r
Polymer Chemistry (DSE - I, Old Syllabus Odisha) (Sem V Kerala University) (Core XVII, New Education Policy)
Notes on Polymer Chemistry for BSc Honours Introduction: The word polymer comes from the greek words 'poly' meaning many and 'meros' meaning parts. Thus a polymer is a large molecule made up of smaller units called monomers that are chemically linked together. These polymers can found in nature or can be synthetically prepared or man-made. Some examples of natural polymers are DNA, Proteins, polysaccharides, cellulose, polypeptide and natural rubber. Similarly some examples of man made polymers include polythene, PVC, Polyamides, Nylon etc. Difference between polymers and macromolecules: We have already defined polymers which necessarily contain repeating monomer units. For example: Polythene contains the repeating unit of ethene monomer unit. M acromolecules have a bigger molecular structure and higher molecular weight but have no repeating units. For example: fat molecules contain glycerol and different fatty acids. Degree of polymerization (DP): The number