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Important Formulae for Purification Characterization of Organic Compounds

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Important Formula #1

The methods which are generally employed for the purification of organic compounds are :Crystallization,Sublimation,Distillation,Fractional Distillation,Distillation under reduced pressure,Steam Distillation,Azeotrophic distillation,Differential extraction,Chromotography.

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Important Formula #2

Chromatography is the modern technique used for separation and purification of organic compounds. The method was discovered by Tswett.

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Important Formula #3

Distillation process can be applied only if the liquid and the impurity differ in their boiling points by 30 to 50K. For example: Ether and toluene,benzene and aniline etc.

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Important Formula #4

Estimation of nitrogen can be done in two ways:Duma's method,Kjeldahl's method

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Important Formula #5

Elevation of boiling point method = m=1000*Kb* wt. of solute/T *wt. of solvent






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