Question

p rsolvent) 6. Can the vapor pressure of a liquid be greater than 1 atm? Explain. 7. What possible hazard might occur if a distillation vessel is heated all the way to dryness? 8. Refer to Figure 1G-4. Predict the boiling point of the initial drops of distillate from the distillation of a mixture that contains 0.80 mol fraction of toluene and 0.20 mol fraction of cyclohexane. 9. Is it proper procedure to add the boiling chips down through the condenser once a solu- tion has started to reflux? What is expected to happen if this procedure is followed? 10. A certain reaction requires 80 minutes to reach completion in refluxing diethyl ether (bp 35°C). Estimate the reflux time required if the reaction is run in tetrahy drofuran (bp 65°C).

Answer 1

6.

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