Here is an example using bromobenzene but the process is similar for iodobenzene.
http://books.google.com/books?id=QtiZA9ZyuUMC&pg=PA137&lpg=PA137&dq=calculations+steam+distillation&source=bl&ots=0NdsPYbpzq&sig=9odCG9Aq1ocJQPM9Nv_6bCno3mo&hl=en&sa=X&ei=g4iRUKGSCciy2wXnqYHQCw&ved=0CB8Q6AEwAA#v=onepage&q=calculations%20steam%20distillation&f=false
Iodobenzee steam distills at 98.2C. How many molecules of water are required to carry over 1 molecule of iodobenzene? How many grams of water per gram of iodobenzene?
1 answer