2. What is the boiling point of cyclohexane? Toluene? Cyclohexane: Toluene: Whic

Question

2. What is the boiling point of cyclohexane? Toluene? Cyclohexane: Toluene: Which of the following transitions best exemplifies the temperature gradient (transition) that you want to maintain inside the fractional distillation column? (Temperature at t Temperature at the top of the column) (Circle one) 5. he bottom 25 75 75°C 75°C 125 °C 25 °C 25 °C 125 °C 4. Which method of distillation produces the best separation? (Cirde one) Simple Fractional For questions 5-10, imagine that we have a mixture that has a volume ratio of 75:25 Pentane Cyclohexane The boiling point of pentane is 36.1 °C. Refer to graphs A-F to answer as necessary

Explanation / Answer

2. Cyclohexane - 80.7 C, Toluene - 110.6 C

3. 125 C -25 C

4. Fractional

5. Fractional distillation - A

Simple distillation - B

Theoritical distillation - E

6. X = Boiling point of pentane = 36.1 C

Y = Boiling point of Cyclohexane = 80.74 C

7. 90 : 10, Graph A

8. 20 : 80, Graph A

9. Theoritical yield = 90 ml

10. 60 ml

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