1.What is the boiling point of pure toluene according to the boiling point diagr

Question

1.What is the boiling point of pure toluene according to the boiling point diagram?

2.What is the initial boiling point of a solution that contains 70% toluene and 30% benzene?

3.What is the approximate composition of the vapors when a solution of 70% toluene and 30% benzene is heated to its boiling point?

4)                  A student carried out a simple distillation on a compound known to distill at 124°C and reported a boiling point range of 116-117°C. Gas chromatographic analysis of the product showed the product was pure, and a calibration of thermometer indicated the thermometer was accurate. What procedural error might the student have made in setting up the distillation apparatus?

5)                  A mixture of toluene, benzene, and 1,2-dimethylbenzene (ortho-xylene) is injected on a gas chromatography column. Predict the sequence of retention times indicating which compound will have the shortest, middle, and longest retention time.

Explanation / Answer

1.What is the boiling point of pure toluene according to the boiling point diagr

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