Subject: Organic Chemistry 1 Lab Book: John Lehma, expermient 6, question 3 Usin
ID: 809662 • Letter: S
Question
Subject: Organic Chemistry 1 Lab
Book: John Lehma, expermient 6, question 3
Using the date in table 6.3, construct a temperature-composition diagram like that shown in figure E15 of OP-32. (a) From your diagram, estimate the initial composition of the distillate obtained by simple distillation of a mixture containing 20 mole percent cyclohexane and 80 mole percent toluene
Please explain and show the complete answer. Show the graph used to get the answer. Thank you
Table 6.3 Temperature-composition data for cyclohexane-toluene
Mol % cyclohexane
T,
T,
Explanation / Answer
Answer:
What if we now took the 80% cyclohexane/20%toluene mixture that we just obtained and placed it into a clean distillation set-up and distilled that.
Upon analysis we would find that the distillate is now 95% cyclohexane and 5% toluene. Again this is a substantial enrichment but perhaps not yet of the desired purity. Take that distillate and distill it again. This third distillation would produce distillate that is about 99% pure cyclohexane. This would normally be considered to be fairly