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Sublimation - Purification of organic compounds
Specific organic solids on heating directly change from solid to vapour state without passing via a liquid state, such types of substances are known as sublimable and this procedure is called sublimation. The sublimation process is employed for the separation of sublimable volatile compounds from non sublimable impurities. The process is usually employed for the purification of camphor, anthracene, naphthalene, benzoic acid NH4Cl,HgCl2, solid SO2, Iodine and salicylic acid etc containing non-volatile impurities.
Estimate the molar volume of Isobutylene at 230 C and 32 bar. Compare your estimate to what you would obtain with the ideal gas law The Pitzer method is a common methodology u
Number of unpaired electrons in Mn 4+ is: (1) 3 (2) 5 (3) 6 (4) 4 Ans: 3
achiral vs diastereomers
A single covalent bond is build when two atoms share a pair of electrons. Triple and double bonds can be formed when two or three such pairs are shared. A Lewis structure is a repr
manatic moment of KMno4
When 3.896 grams of a hydrocarbon, CxHy, were burned in a combustion analysis apparatus, 11.40 grams of CO2 and 7.003 grams of H2O were produced. In a separate experiment, the mo
Q. Show the Colorimetric analysis? Colorimetric analysis depends on the variation of the colour with the change in concentration of the compound. Usually, absorption of light i
how to lean it and understand it
Explain the un-ionized form of vanillin It is the un-ionized form of vanillin that has the typical odor. In NaOH solution, the phenol group ofvanillin ionizes to its conjugate
The radius of which of the following orbit is same as that of the first Bohr's orbit of hydrogen atom: (1) He + (n= 2) (2) Li 2+ ( n= 2) (3) Li 2
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