Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Simple crystallisation - Purification of organic compounds
This is the most general technique used to purify organic solids. It is associated with the concept that whenever a crystal is made, it leads to leave out the impurities. For crystallisation, a appropriate solvent is one (a) that dissolves more of the substance at higher temperature as compared to at room temperature (b) where impurities are either insoluble or that to an extent that they stay in solution (in the mother liquor) upon crystallisation, (c) that is not highly inflammable and (d) which does not react chemically along with the compound to be crystallized. The most generally used solvents for crystallisation are: ether, water, chloroform, carbon- tetrachloride, petroleum ether acetone, benzene etc.
I read that in the first transition series,the stability of +2 oxidation state decreases from Sc to Cu.but,I observed that as we move along the 3d -series,the stability increases i
Vulcanization of rubber The procedure of heating natural rubber with sulphur to enhance its properties is known as vulcanization. Vulcanization was illustrated by Charles Goody
Originally, chewing gum was made from the latex sap of the sapodilla tree (native to Central America). This sap was known as chicle. Other natural gum bases may be used, such as je
How do i figure out number of protons available for reaction with OH- in a oxalic acid+NaOH reaction?
Higher fatty acids - Carboxylic acids Stearic, Palmitic, and oleic acids are found in natural fats and oils like glyceryl esters. Higher fatty acids derived their names from
Q. Show the Effect of pressure on chemical equilibrium? Ans. In gases, the pressure is proportional to the number of moles of molecules. Reactions accompanied by a change
working of electrolysis process? components of electrolysis process? advantages and disadvantages of electrolysis process?
properties and effects
what is agar-agar
Q. Explain about Electron-Dot Structures? Write an electron-dot structure for a impartial atom of arsenic an element used in semiconductor materials because of its electron con
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd