Experiment 12 - recrystalized, and then refiltered again....

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Experiment #12 Green Oxidation April 30, 2009
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Balanced Reactions: This experiment oxidized benzaldehyde to benzoic acid in water using Oxone ® as the oxidizing reagent. Oxone® is the trade name for a potassium triple salt containing potassium peroxymonosulfate (KHSO5), potassium hydrogensulfate (KHSO4), and potassium sulfate (K2SO4) in a 2:1:1 molar ratio. Oxone is used primarily as a green oxidant due to its non-toxic nature and nonpolluting byproducts. i Mechanism: Results and Discussions: 1.0g of benzaldehyde, 7.25g of Oxone, and 25ml of water were added to a condenser, and heated at 60-70 degrees for 75 mins and then cooled on an ice-bath for 15-20 mins. The product was then filtered,
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Unformatted text preview: recrystalized, and then refiltered again. IR spectra and mass were taken. Data: Observations Sample IR Values Crude Mass Recrys. Mass %Yield Crude MP Recrystallized MP Benzoic Acid 120-122C IR Spectra: Attached Figure 1: benzoic acid Calculations: Conclusion: Crude melting point of 120-122 shows that benzoic acid was obtained with relatively little amount of impurity. Possible redundant recrystallization showed melting point of which again demonstrates benzoic acid. Mass of showed percent yield. Reaction was concluded to have gone through to completion given IR values of Bibliography: i Courtesy of Chem. 2510 Experiment 12 Assignment...
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Experiment 12 - recrystalized, and then refiltered again....

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