2311 lec 2 - • Never throw anything away until you are...

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Synthesis of t-Butyl Chloride
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Synthesis of t ButylChloride 1. Reaction in Separatory funnel 2. Separate product from reactants Extraction Wash away excess acid and neutralize 3. Dry (remove trapped water) 4. Distill – purify product and indentify by bpt
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Liquid/Liquid Extraction Definition - transfer of solute from one liquid phase to another Two insoluble liquids – water/ organic Knowledge of density of liquids important
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Mohrig Technique 8 Extraction and Drying Organic Liquids pp. 75-79 Theory pp. 80-86 MINISCALE microscale later pp. 92-93 Sources of Confusion Terms – extracting, washing, distribution coefficient, brine (saturated NaCl sol)
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Demonstration/Tips Always remove the stopper before draining Always vent (away from you) Top layer is poured out the top only Bottom layer drained Position tip of funnel inside the receiving flask
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Unformatted text preview: • Never throw anything away until you are sure you have your product Simple Distillation Mohrig Technique 11 • First of four types of distillation • Simple distillation is used to purify and identify a liquid with minor impurities (last step of purification) • Determine boiling point of a liquid Simple Distillation Apparatus • Clamp at distilling flask first with metal clamp • Position thermometer correctly for accurate bpt • Apparatus should be raised so heat source can be removed quickly • Anchor out water hose with plastic funnel Boiling Point Range • Record from first drop of stabilized to last • Simple distillation is only useful for mixtures if bpts are > 70 o C (example: “remove a low boiling solvent from an organic solvent with a high boiling points”) or “as the last step in the purification of a compound”...
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This note was uploaded on 02/20/2010 for the course CHEM 2311 taught by Professor Wissinger during the Spring '10 term at University of Minnesota Duluth.

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2311 lec 2 - • Never throw anything away until you are...

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