Pre-lab questions 1. What is the basis for separation of compounds using distillation? Why is it...
Post Lab Questions Fermentation: 1. What physical property enables one to use distillation for the separation of ethyl alcohol enriched from the water mixture? 2 What is an Azeotrope? Explain how can azeotropes be used to purify mixtures? 3. Azeotropes are also defined as liquid mixtures having a vapor pressure at constant temperature, as a function of composition. Explain with your own words why vapor pressure depends on the composition of the mixture. 4 If the distillation temperature is different...
Questions about distillation: Titration Data - Fractional Distillation -Simple Distillation - Temperature (Celsius) -- -- --- --- --- --- -- --- -- --- B.P. methanol = 65C B.P. ethanol = 78C 0 0 0 0 0 0 0 0 0 15 Volume (ml) 1. Why does the fractional distillation show no change in temperature while the system is heated and approximately 20mL is distilled? What is occurring when the temperature increases rapidly at about 25ml? 2. At 70°C, the vapour...
LAB 2A SEPARATION OF LIQUIDS BY SIMPLE DISTILLATION ANALYSIS BY GAS CHROMATOGRAPHY LAB 2A Pre-Lab Questions NAME DATE LAB SECTION Answer the following questions in the pre-lab section of your notebook. 1. Which compound, acetone or 1-propanol, has the higher boiling point? Why? 2. Do you expect acetone to be soluble in 1-propanol? Why or why not? Model: For this question, you will be graded on completion, rather than correctness of the model. In the post-lab, you will be asked...
m m Liege Ammerman Campus. Department of Physical Science 2. During a fractional distillation, why is a better separation achieved when heat mation, why is a better separation achieved when heat is applied slowly and steadily? (2 pts) 3. Con Consider heating a pure substance, such as acetone, to its boiling point. Why doesn't all the acetone vaporize instantly when the boiling point is reached? Hint: think about the heat of vaporization. (1 pt) 4. Why is it preferable to...
1) Why is the column packing material used in the fractional distillation column? 2) What should be the characteristic features of an ideal column packing material? 3) Two fractional distillations are run with identical mixed samples of two liquids using different columns. In apparatus A, the column is 15 em long, and in apparatus B, the column is 25 cm long. Will one apparatus provide any better separation of the mixture then the other? If so which one and why?...
Hi! Based off the the 5 questions in the beginning can you please help me with question 6 What is distillation, and how is it possible that it separates two (or more) liquid compounds from each other? What is the difference between simple and fractional distillation? Our distillation experiment replicated what is used in the beverage industry to produce high concentration alcoholic spirits. Why can't high alcohol contents be produced by yeast fermentation alone? Why must distillation be used? Distillation...
I need the answer for all of the questions please:) thats for oragnic chemistry lab What extra chemical process, accomplished either via enzymes of chemical methods, must occur before the sugars in corn, potatoes, or grass can be fermented by yeast? What is happening during the fermentation process? Describe the set-up in the lab for the fermentation process. What is the difference in boiling point between water and ethanol? How does this affect the choice of distillation (simple versus fractional)...
#8- could simple distillation be used to isolate a pure sample? if so, in what type if situation would this be possible? thank you!! b. Which component should distill off first? c How does the boiling point of that liquid compare to temperature measurements at the beginning of both simple and fractional distilation? d. What does this comparison tell you about the composition of the intial distlation from both simple and fractional diestilation? e Using vour tractional distilation plot, estimate...
#9. if you were trying to separate two compounds with very close boiling points how could you increase the efficiency of a fractional distillation in order to separate those compounds? thank you!! b. Which component should still off ist? How does the boiling point of that liquid compare to comperare mesurements at the beginning of both simple and fractional distillation? d What does this comparison tell you about the composition of the station from both simple and tractional distillation? e....
Experiment Lab Questions: Distillation of Alcohol Reagents: (1) Ethanol (C2H5OH) [ MW = 46.07 g/mol density = 0.789g/mL boiling point = 78.37 C ] (2) Red food dye (non-volatile) Questions: 1. What is the theoretical Yield 2. How can we improve the efficiency of this distilation experiment? 3. What is the reason for a sharp increase in temperature at one point? 4. What is the reason we can assume that distillation is completed when the temperature drops? 5. a. Discuss...