Last Lab EXP M1. Iron Analysisdocx - Mikalah Millheim Lab Partner Ashlin Chavez EXP M1 Iron Analysis May 4 2016 I Water Blank Fe2 Ion Fe3 No Addition

Last Lab EXP M1. Iron Analysisdocx - Mikalah Millheim Lab...

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Mikalah MillheimLab Partner: Ashlin ChavezEXP. M1 Iron AnalysisMay 4, 2016I.Water BlankFe2+IonFe3+No AdditionClear/ colorlessNearly as transparent as waterCloudy, dull orangeAcidFilmy, colorlessSame as waterLost vibrant orange colorCr2O72-Clear, yellow tingeBlueish green tintNo changeSCN-Clear yellowLight blood redTomato juice, murky redD. Cr2O72-(aq) and SCN-(aq) can test for the presence of Fe2+: a sample positive for Fe2+will exhibit a blue-green color after Cr2O72-(aq) is added and a light red color after SCN-(aq) is added. A mixture with Fe3+will not show any change when Cr2O72-(aq) is added but will turn to a murky, opaque red.II. Water BlankFe2+Fe3+MnO4-Light purple w/ clear bottomGreenish blue tintMurky purple
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C. From the data, it appears that some Fe2+remains unreacted after permanganate was added. The color shown was the same as the one in part I that indicated the presence of Fe2+.
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