Download e-book for iPad: Advanced Practical Chemistry by Jagdamba Singh, R. K. P. Singh, L. D. S. Yadav, I. Q.

By Jagdamba Singh, R. K. P. Singh, L. D. S. Yadav, I. Q. Siddiqui

ISBN-10: 9350060000

ISBN-13: 9789350060001

The target of this e-book is to supply adequate wisdom to its readers in regards to the proposal of complex useful CHEMISTRY

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Preliminary Test: (i) Test for - COOH groups (it is present) (ii) Test for phenolic -OH (it is present) (iii) Test for nitrogen (it is absent). Thus mixture can be separated by the use of NaHC0 3 as follows: Shake 10 g of mixture with 25 ml of saturated solution till effervescence stops. The resulting reaction mixture is a clear solution. This is because sodium salt of acid is soluble in water and phloroglucillol is also soluble in water. Transfer the solution in 100 ml separatory funnel and extract it with 50 ml of ether (in two portions).

If both components are pure then repeat the process with 10 g of the mixture to get both components in good yield. If no residue is obtained on evaporation of the filtrate then shake the mixture with hot water and filter it in hot condition. See whether mixture is separated by hot water or not. '(B) Separation by organic solvent (say ether) : If mixture is not separated by water then take ether as a solvent and see whether mixture is separated or not as follows: Shake 200 mg of mixture with 10 ml of ether in a boiling tube and filter I Residue Wash with ether, dry and determine the mp.

It is compound-l (Diphenic acid). Non-aqueous layer Wash with 10 ml saturated sodium bicarbonate solution and then shake with 10 mIl : 1 HCI in a separatory funel and separae aqueous and nonaqueous layers. t Aqueous layer Basify the solution with dil NaOH. Cool and separate non-aqueous layer. It is oily liquid which is compound-2. Compound-2 is o-toluidine I Non-aqueous layer it is vicious yellow coloured liquid. 111 SEPARATION LIST OF TERNARY MIXTURES AND SOLVENT{S)/REAGENTS FOR THEIR . 1. 2. 3.

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Advanced Practical Chemistry by Jagdamba Singh, R. K. P. Singh, L. D. S. Yadav, I. Q. Siddiqui

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