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Quantitative analysis - Estimation of Elements
After qualitative analysis of elements, the another step in the determination of molecular formula of an organic compound is the estimation of several elements by mass, that is finding the percentage composition of the elements by mass. The several methods generally employed for the estimation of principal elements are as follow:
1. Carbon and Hydrogen
2. Nitrogen
3. Halogens
4. Sulphur
5. Phosphorous
6. Oxygen
Nucleophilic aromatic substitution reaction The product is formed by a nucleophilic aromatic substitution reaction in which chloride is displaced by hydroxide ion. The product
assigment work of crossion
The ratio between the neutrons in C and Si with respect to atomic masses 12 and 28 is: (1) 2 : 3 (2) 3 : 2 (3) 3 : 7 (4) 7 : 3 Ans: 3 : 7
what are the conditions of double indicator titrations??
Close to 12.2 billion metric tons of ethylene glycol (EG) were produced in 2000, which ranked it the twenty-sixth most produced chemical in the nation that year on a total mass bas
define hardness and its type?
2-Ethylbutanoic acid can be prepared by a malonic ester synthesis
Properties of Unsaturated halides (Halo-alkene) Halo-alkene is a colourless gas at room temperature. The boiling point of it is -13°C. The halogen atom in vinyl chloride is not
The configuration 1s 2 2s 2 2p 5 3s 1 shows: (1) Ground state of fluorine atom (2) Excited state of fluorine atom (3) Excited state of neon atom (4) Excited state
Indicate whether the following thermal reactions are allowed concerted reactions by the Woodward-Hoffmann criteria. Classify the reaction according to type. On the basis of
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