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Unformatted text preview: the Beckmann thermometer B (already "set" for the required solvent) and the stirrer S made of thin glass rod. It is advisable for the hole in the cork carrying the stirrer S to be protected by a short collar C of glass tubing, the handle of the stirrer being bent after threading through the collar. The tube T fits into an outer tube J, which acts as an air-jacket to prevent too rapid cooling of the contents of T. J in turn is held in a metal Hd covering a large glass jar of ice-water: a much heavier and stronger stirrer D passes through this lid to enable the ice-water mixture to be thoroughly stirred from time to time. FIO. 79. Weigh the clean dry tube T, then add about 25 ml. of the pure solvent (i.e., sufficient to ensure that the bulb of the thermometer...
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This note was uploaded on 09/19/2011 for the course CHM 2211 taught by Professor Castalleano during the Fall '06 term at University of Florida.
- Fall '06
- Organic chemistry