inorganic+chemistry+exp - INORGANIC CHEMISTRY EXPERIMENT...

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INORGANIC CHEMISTRY EXPERIMENT Experiment 1 : PURIFICATION OF SODIUM CHLORIDE Experiment 2 : DOUBLE SALTS Experiment 3 : GROWING CRYSTAL FROM AQUEOUS SOLUTION Experiment 4 : REACTION OF Cr, Fe, Co, Ni, AND Cu ION Experiment 5 : COMPARISION WITH Cu(I) AND Cu(II) COMPOUND Experiment 6 : Preparation of [Co(NH 3 ) 6 ]Cl 3 and [Co(en) 3 ]Cl 3 Experiment 7 : PREPARATION OF [Co(NH 3 ) 4 CO 3 ]NO 3 [Co(NH 3 ) 5 Cl]Cl Experiment 8 : Geometrical isomerism ( cis and trans- [CoCl 2 (en) 2 ]Cl 2 ) Experiment 9 : LINKAGE ISOMERISIM ( Nitro and Nitrito Covalt(III) Complex) Experiment 10 : CYCLE OF COPPER REACTION Experiment 11: Bioinorganic Chemistry: Synthesis and Study of an Oxygen- Carrying Cobalt Complex Which Models Hemoglobin. Experiment 12 : The Synthesis and Characterization of YBa 2 Cu 3 O x - the "1-2-3" Superconductor.
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IONIC SALTS Experiment 1. PURIFICATION OF SODIUM CHLORIDE Subject: Pure Sodium Chloride from Common Salt materials required dropping funnel, round buttom flask, Erlenmeyer flask, funnel, beaker, glass tube, rubber tube common salt(NaCl), BaCl 2 , (NH 4 ) 2 C 2 O 4 , dye (paranitrobenzen-azo-resorcinol), NaOH,c-H 2 SO 4 ,c-HCl procedure Dissolve 50 grams of common salt in 150 ml of hot water. Cool, filter, and test small portions of the solution qualitatively for sulfate, calcium, and magnesium. To test for sulfate, add barium chloride and dilute hydrochloric acid; for calcium,add ammonium oxalate; for magnesium, add a few drops of a dilute solution of the dye paranitrobenzene-azo-resorcinol followed by 2N sodium hydroxide.In the last test, magnesium gives magnesium hydroxide colored blue by the dye; the blue is distinct from the purple color the dye itself gives with sodium hydroxide. Fig.1. Pure sodium chloride from common salt Place the remaining solution in an Erlenmeyer flask and pass over it a slow stream of hydrogen chloride gas, generated by dropping concentrated sulfuric acid into concentrated hydrochloric acid. To prevent the hydrogen chloride gas from passing out into the room, it is absorbed in sodium hydroxide solution by use of the funnel arrangement shown in Fig.1. Note: (a) The gas is passed over the salt solution and not
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through it. (b) The funnel dips only a millimeter or so below the surface of the sodium hydroxide. The reasons for these arrangements should be clear. Pure sodium chloride precipitates from the solution, the impurities remaining in solution. Note the shape of the crystals as they form. When a substantial precipitate has formed, filter it on the Buchner funnel, rinse with a very little cold concentrated hydrochloric acid, then dry in an evaporating dish on the steam bath. Use a glass spatula, not steel, for the manipulations. Dissolve a gram or so of product in 15 ml of distilled water and test this solution as
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This note was uploaded on 04/09/2011 for the course CHEM 555 taught by Professor Ck during the Spring '11 term at Baptist College of Health Sciences.

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inorganic+chemistry+exp - INORGANIC CHEMISTRY EXPERIMENT...

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