EXPERIMENT 2 - EXPERIMENT 2 AIM The aim of this experiment...

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EXPERIMENT 2 AIM The aim of this experiment is to precipitate nickel (II) from dimethylglyoxime solution using homogenous precipitation. INTRODUCTION Homogenous precipitation is where a precipitating agent is added slowly to solution and the reaction takes place within the reaction mixture. In this experiment, Nickel (II) is precipitated homogenously with Dimethylglyoxime by oximation of biacetyl. The compound Dimethylglyoxime is a compound that is almost specific for joining to Nickel. The Ni (II) ion forms a Ni (dmg) 2 complex which is insoluble in water. This reaction occurs slowly within the reaction mixture to create a very pure form of the Ni (dmg) 2 complex. EXPERIMENTAL 1 The filtering crucibles were prepared by lab staff and 3 of these were obtained and weighed. 2 3g of hydroxylamine hydrochloride was added to 300mL of water in a beaker. 3 A pH meter and electrode was calibrated and then used in conjunction with 6M ammonia and 6M acetic acid to obtain a pH of 7.5 ± 0.1. 4
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This note was uploaded on 06/15/2010 for the course AP 32185 taught by Professor Meher during the Spring '10 term at Acton School of Business.

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EXPERIMENT 2 - EXPERIMENT 2 AIM The aim of this experiment...

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