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Experiment 24 lab report.docx - Prabhleen Sidhu Chem...

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Prabhleen Sidhu Chem 12b-53806 03/13/17 4-methylcyclohexene The objective of this experiment is to perform an alcohol dehydration, an acid-catalyzed reaction, of 4-methylcyclohexanol to 4-methylcyclohexane. The process of the experiment is shown below: An alcohol dehydration reaction can be carried through by strong mineral acids. Phosphoric acid and sulfuric acid was used to protonate the -OH group on the 4- +6 drops Phosphoric Acid + 6 ml Sulfuric Acid Distillation at 160 degrees celsius, heat + H2O + H3PO4 (Removed by NaCl- used to remove the phosphoric acid that was inevitably co-distilled with the product) + Na2SO4 to evaporate the water and sodium chloride 4-methylcyclohexanol 4-methylcyclohexane
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methylcyclohexanol, this dissociates the group into H 2 O. The loss of the proton in the carbocation intermediate makes it into 4-methylcyclohexene. This reaction goes through an elimination reaction. This experiment uses a combination of both sulfuric acid and phosphoric acid, as using only sulfuric acid will cause charring. The mechanism of this reaction is shown
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