This preview shows page 1. Sign up to view the full content.
Unformatted text preview: water is then run out of the vertical condenser and passed through the inclined condenser. The rate of heating is increased and any volatile product will then distil over. Fractional Distillation. Fractional distillation on a semi-micro scale can be carried out satisfactorily with the fractionating column shown in Fig. 39. The column is 10 cm. long and is filled with pieces IOcm. to Pump FIG. 39. FIG. 40. (3-4 mm. long) of very narrow glass tubing. As in all fractionations the distillation must be carried out very slowly and in this connection, particular use is made of the ''upward" bend of the side-arm so as to record the maximum temperature of the issuing vapour. The apparatus shown in Fig. 38 can also be used for fractionation by placing a secure plug of glass wool at the base of the vertical con-denser and then filling it with short pieces of glass tubing....
View Full Document
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