Lab Report for Group I Cations

EXPERIMENT 9: GROUP II CATIONS PURPOSE Numeric values are not the end all and be all of chemistry experiments. soft observations are equally all important(predicate) as indicators of chemical ready and the nature of the reactants participating in a chemical reaction. In this experiment, the focus was on soft analysis of the Group II cations, Cu2+, Bi3+, Pb2+, Sn4+ (DePaul University, 89). Through a bring of rapidly spinning the solutions in a centrifuge, adding different vitriolics to the solutions, and analyzing the reactions of the remain liquids and precipitates, the qualitative data in this experiment determined the straw man of copper, bismuth, lead, and tin in a know and unknown bar solution. PROCEDURE In the former weeks experiment, the proper molarities of the necessity acids were prepared. The molarities of these acids implicate: 6 M HCl, 6 M HNO3, 6 M NH4OH, and 6 M H2SO4. To put on 30 mL of 6 M HCL, 14.8 mL of the acid was added to 15.2 mL of deionized piddle. To make 30 mL of 6 M HNO3, 11.4 mL of the acid was added to 18.6 mL of deionized water. To make 30 mL of 6 M NH4OH, 12.0 mL of the acid was added to 18.0 mL of deionized water. Finally, to make 30 mL of 6 M H2SO4, 9.93 mL of the acid was added to 20.07 mL of deionized water.

The remainders of these acid-forming solutions from the previous weeks experiments were stored in the testing ground cabinets and used in this weeks experimentations. Refer to designing 9.1 on Page 94 of the lab manual for the data-based office (DePaul University, 94). This flowchart was followed for the known sample. The flowchart was then restate for the unknown sample. Instead of development NH3, NH4OH was used. Precisely fifteen drops of deionized water were... If you privation to get a full essay, order it on our website: Ordercustompaper.com

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