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Unformatted text preview: 8) Reflux for prescribed time period. Record the appearance change in the mixture. 9) Do not transfer the boiling chip into the separatory funnel on the extraction step. 10) Be careful with separatory funnel (especially with bicarbonate wash). The rapid buildup of gas may cause the top to burst off while inverted. When beginning the extraction, invert and vent IMMEDIATELY, then vent every few seconds until the acid/base reaction subsides. 11) While distilling, note the temperature “range”, not point, over which you collect your ester. Drip rate should be no faster than 1 drop per two seconds if you are heating properly. Make sure cooling water flows up hill again. 12) We will omit the spectroscopy and boiling point determination portions of the experiment. 13) You will neutralize your aqueous waste with solid baking soda in the hood. 14) This is a long lab--- be prepared so it will run smoother and faster....
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This note was uploaded on 07/10/2011 for the course BCH 4033 taught by Professor Stern during the Summer '11 term at UNF.
- Summer '11