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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
Theory of Meta directing group The substituent, S takes electrons from para and ortho positions. So, m-position becomes a position of comparatively high electron density and fu
The shape of d xy orbital will be: (1) Circular (2) Dumb-bell (3)Double dumb-bell (4) Trigonal Ans: Double dumb-bell
In a period, the element with maximum atomic volume belongs to which group?
The mineral pyrite, or iron pyrite, is an iron sulfide with the formula FeS 2 . This mineral''s metallic luster and pale brass-yellow hue have earned it the nickname fool''s gold b
a) The Strength of ionic bond b) Stability of the Ionic compound c) Ease of formation of the Ionic bond enhances
There are two type of vitamines 1.water soluble 2.fat soluble water soluble vitamines are B complex and C vitamines vitamine c is soluble in water so dissolve in water and ca
unique prperties of colloids
The ratio among the radius of cation and the radius of anion is known as Limiting radius.
dissolving
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