The Chemistry and Qualitative Analysis of Cations: Group Separations and Separations of GroupI CationsAnna FerencziChem 127 LabMary BXiao ZhaoMarch 6, 2019
Experiment Summary Purpose:Follow steps to identify the cations in our unknown substance through a qualitative analysis. Fundamental principle behind the experiment: A cation is a positively charged ion, meaning it has more proton than electrons. Selective precipitation is one of the simplest yet most successful ways to separate one meatal cation from another, meaning that one or more cations can be precipitated from other cations that are both in the same solution. When using this approach, one must first consider what reagent is best suited for precipitating the cation in focus and the amount of reagent to be used. In this experiment, wewill be depending on qualitative analysis meaning we will be looking for observed changes instead of calculated data.Method: Two identical procedures were carried out on different solutions. The second was with anunknown solution containing cations that we would have to identify. Considering this I will only
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