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chem 110-102_report_lab_6

chem 110-102_report_lab_6 - Kate Stonesifer Chem 110-102...

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Kate Stonesifer Chem 110-102 Oct, 14 th 2009 Team: John C. General Chemistry 1 Experiment # 6: Identity of an Ionic Compound
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Introduction: We wanted to determine an unknown solution through the use of different compounds. By mixing cations and anions together we could see the precipitation reaction if one did occur. In the next part of the lab, when Ag is mixed with certain ions, it brings forth a solid solution and this allowed us to determine which compound most closely resembled the unknown earth salt from above. Taking that data we were able to construct a chemical equation for the chemical reaction that had taken place. Data: Part A : Solubilities of Alkaline Earth Metal Salts; Cations test S= Soluble, I= Insoluble Anions Cations Na 2 SO 4 (NH 4 ) 2 C 2 O 2 Na 2 CO 3 K 2 CrO 4 Mg(NO 3 ) 2 S S I S Ca(NO 3 ) 2 S I S I Sr(NO 3 ) 2 I I I S Ba(NO 3 ) 2 I I I I Unknown (Mg) S S Part B : Appearance of Insoluble Halide Salts; Anion Tests Silver Nitrate (AgNO 3 ) NaCl Milky white, flaky/ chunky graduals NaBr Milky grey, sandy graduals
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