Figure 1: Flow Chart for Qualitative Analysis of Known Cations Test Tube 1: Solution of 2+ Ba²+, Ca²+ and Mg²+ Ba Soy (L
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Figure 1: Flow Chart for Qualitative Analysis of Known Cations Test Tube 1: Solution of 2+ Ba²+, Ca²+ and Mg²+ Ba Soy (L
Unknown #: сат Identification of the ions in unknown: mg Figure 2: Flow Chart for Qualitative Analysis of Unknown Solution Test Tube 1: Possible solution of Ba, Ca and Mg add ammonium sulfate and centrifuge NO N/A reaction (List formula and description of precipitate, if present. If no result, write N/A.) decant supernatant Test Tube 2: Possible solution of Ca² and Mg add ammonium oxalate and centrifuge Ca (₂ 04 white (List formula and description of precipitate, if present. If no result, write N/A.) decant supernatant Test Tube 3: Possible solution of Mg²+ add sodium hydrogen phosphate, sodium hydroxide and centrifuge decant supernatant #1 dissolve precipitate with HCI, add Mg indicator, NaOH, then centrifuge again decant supernatant #2 Mg(OH)₂ brown color (List formula and description of precipitate, if present. If no result, write N/A.) precipitate
1.) What is the purpose of centrifuging solutions containing precipitates? to Pour down the precipitate. 2.) If your unknown produced a precipitate with ammonium sulfate, a precipitate with ammonium oxalate, and no blue "lake" precipitate, then what ions would be present in your unknown? 3.) If your unknown produced no precipitate with ammonium sulfate, but the next two tests were positive, then what ions would be present in your unknown?