CHEM 012 Lecture Notes - Lecture 5: Side Arm, Elution, Boiling Point
Document Summary
Week 5 september 22 28, 2009. Procedure is from bell, clark and taber, chapter 5, exp 5b and 5c, pgs 54, 55. 2 boiling flasks (100 ml round bottom flasks) 1 vigreux column (sign out from stock room) 2 10 ml graduated cylinders to be used as receivers to collect distillation fractions. Boiling stone (use only one or two stones per boiling flask!) Work in teams of 2 or 4 for this experiment. Half of the team will carry out a simple distillation of a 1:1 mixture of cyclohexane and toluene (methylbenzene) and the other half will perform a fractional distillation of the cyclohexane/toluene mixture. Each team will then use gas chromatography to compare the composition of the first and last collected fractions for both the simple and fractional distillation processes. Have another 10 ml graduated cylinder ready since you will be collecting up to 16 or 17 one ml fractions.
