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 meaning(a) as indicators of chemical discrepancy 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 mould of rapidly spinning the solutions in a centrifuge, adding different doses to the solutions, and analyzing the reactions of the stay liquids and precipitates, the qualitative data in this experiment determined the movement of copper, bismuth, lead, and tin in a cognise and unknown measuring rod solution. PROCEDURE In the former weeks experiment, the proper molarities of the prerequisite acids were prepared. The molarities of these acids implicate: 6 M HCl, 6 M HNO3, 6 M NH4OH, and 6 M H2SO4. To limit 30 mL of 6 M HCL, 14.8 mL of the acid was added to 15.2 mL of deionized water supply. 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 solutions from the previous weeks experiments were stored in the research lab cabinets and used in this weeks experimentations. Refer to reckon 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 tell for the unknown sample. Instead of exploitation 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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