Chem262LEp3 - Carolyn Johnson Chem 262L sec 419 Wed 1pm...

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Carolyn Johnson Chem 262L, sec 419 – Wed 1pm Experiment 3 Nucleophilic Substitution: The Synthesis of 2’-Methylphenoxyacetic Acid In a 5 mL round bottom flask, 1 mL H 2 O and a magnetic stir bar were added. One pellet of sodium hydroxide, weighing 0.130 g, was placed in the flask and allowed to dissolve. The amount of o-cresol and sodium chloroacetate was calculated based off the weight of the NaOH pellet and the stoichiometric reaction taking place. Once the NaOH tablet had completely dissolved, approximately 0.3514 mL of o-cresol were added with a disposable pipet and allowed to stir for one minute. To dissolve the sodium chloroacetate, 1 mL of H 2 O was added to the 0.378 g of crystals, then it was also transferred to the round bottom flask with a disposable pipet. When the addition was complete, the distillation tube was attached to the flask and placed in a reflux set up. The reaction was allowed to reflux for 5 minutes, then the distillation tube was removed. The hot mixture was poured into an Erlenmeyer flask and boiled to 1/3 of the original
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  • Spring '08
  • Mbadugua
  • pH, Nucleophilic substitution, Sodium hydroxide, Erlenmeyer flask

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