Lecture 05 - Experiment 5 Synthesis und Analysis uff ein...

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Unformatted text preview: Experiment 5 Synthesis und Analysis uff ein Complex Iron Compound Part 1: Synthesis CH 204 Fall 2008 Dr. Brian Anderson Last Veek Standardizing a solution Acid/Base titration moles H + = moles OH – moles acid x # of H + = moles base x # of OH – Calculating moles by and Molarity x Volume grams MW Three-week experimental adventure quest! This week: Synthesis of a potassium oxalatoferrate salt. K x [Fe y (C 2 O 4 ) x ]• z H 2 O Starting material → → → → Product Next two weeks: Qualitative identification of the compound through quantitative analysis of oxalate and iron. Series of reactions “Precursors”, “Intermediate products” Was ist potassium oxalatoferrate? K x [ Fe y (C 2 O 4 ) x ]• z H 2 O Cation : K + Anion : Fe y (C 2 O 4 ) x x­ Waters of hydration An ionic crystal with a big, covalently-bound anion. Oxa-who? ­ ­ Oxalic acid Oxalate ion dot Coordinate Covalent Bonds Coordinate covalent bond : two shared electrons in a bond, but both electrons come from the same atom...
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This note was uploaded on 12/17/2009 for the course CH 310 N taught by Professor Blocknack during the Spring '08 term at University of Texas.

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Lecture 05 - Experiment 5 Synthesis und Analysis uff ein...

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