Homework Answers
4)
Advantage
fractional distillation is very efficient process of separating mixture of multiple chemicals of very close boiling points or densities very efficiently on a single stage fractional plate combination according to customization from the customer end.
Disadvantage
one of the disadvantage of fractional distillation is that it is very costly both to install and after sell service to maintain the machine in proper functioning condition.
5) Addition of boiling chips or stirring helps to eliminate the bumping of the liquid on the flask into the condenser due to extreme heating and thereby controls the boiling through out the process.
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actionar distillation of the same mixture? 4. What main advantage and disadvantage can you predict about...
Questions about distillation: Titration Data - Fractional Distillation -Simple Distillation - Temperature (Celsius) -- -- ---...
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...
3. A mixture of two miscible liquids with widely different boiling points is distilled. The temperature of the vapo...
3. A mixture of two miscible liquids with widely different boiling points is distilled. The temperature of the vapor is observed to plateau and then drop before rising again. Explain this temperature drop. (3 points) 4. If you doubled the length of the fractional distillation column, what would be the advantages and disadvantages? (3 points) 5. Why is better separation of two liquids achieved by slower heating of a mixture? (3 points)
can you help me with all these questions? 4. (25 points) Fractional distillation of a mixture...
can you help me with all these questions?
4. (25 points) Fractional distillation of a mixture of 1:1 ethyl acetate (B.P. 77.5C) and 1-butanol (B.P. 117.0 °C) was performed, and different fractions were collected. a. Describe in detail, how many different fractions you b. Plot a graph for the fractional distillation data you will c. How can you use IR to check if the final fraction is will collect collect. pure or not? s. (20 points) How do you separate...
can you help me with 1? It will be awesome, if I can get help on...
can you help me with 1? It will be awesome, if I can get help
on 2.. too. I kind of stuck thanks
This is a simple & fracional distillation lab btw
POST-LAB QUESTIONS: 1) Consider the fractionating column (either packed or unpacked) in the fractional distillation setup. State oOne advantage if the length of this fractionating column was doubled. State two disadvantages if the length of this fractionating column was doubled Why does one observe a drastic drop in...
rewrite text in past tense Procedure-Simple Distillation 1. Take 60 ml of a 50:50 mixture of...
rewrite text in past tense Procedure-Simple Distillation 1. Take 60 ml of a 50:50 mixture of cyclohexane and toluene and place in a round bottom flask. Make sure you add a few boiling chips. 2. Assemble the distillation apparatus (See Figure 2.) and start the water flowing through the condenser. Place a graduated cylinder under the bent adapter so that you can measure the volume of distillate you collect. 3. Begin heating the sample with a heating mantle until it...
kindly answer the 3 questions not more than few sentences. thank you!! 4. When separating two...
kindly answer the 3 questions not more than few sentences.
thank you!!
4. When separating two compounds with boiling points that are very close together, how would adding an extra fractional column (one on top of the other) in the fractional distillation setup affect the purity of the fractions? Why? 5. When distilling a water/ethanol mixture, which of the two compounds predominately distills first? Why? 3. What is an alternative to using boiling chips in a distillation?
#8- could simple distillation be used to isolate a pure sample? if so, in what type if situation would this be possib...
#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...
Assemble the glassware for fractional distillation according to the diagram and discussion above. Make certain that...
Assemble the glassware for fractional distillation according to the diagram and discussion above. Make certain that all joints are secure and that the apparatus is appropriately supported. Remember to allow for space below the distillation flask for the heating mantle and below the receiving flask for an ice bath. Pay extra attention to the positioning of the bulb of the thermometer as mentioned in the introduction. It is critical that the thermometer be positioned correctly for accurate temperature measurement. Using...
1. What is the main purpose of a presentation? Answer: 2. What is the main advantage...
1. What is the main purpose of a presentation? Answer: 2. What is the main advantage of speaking over writing? Answer: 3. If you want to persuade your readers, what should you consider doing? Answer: 4. While a persuasive speech might include an appeal to emotion, an informative speech should focus on _________. Answer: 5. As an aid to memory, it’s a good idea to have repetition in your presentation. Think of your presentation as having: an _________that previews, a...
2. Three students from your lab have to determine a boiling point of an unknown sample...
2. Three students from your lab have to determine a boiling point of an unknown sample that is supposed to be butanone (Bp.-80°C). Although, all three students have conducted their experiment eorrectly, they came up withe different values: 79°C, 84°C and 75°C. a)Explain what could have beon the source of crror if the sample given to the students is a pure sample and student carried out their measurements properly. b) Propose a solution to correct these diverging data if you...
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...
3. A mixture of two miscible liquids with widely different boiling points is distilled. The temperature of the vapor is observed to plateau and then drop before rising again. Explain this temperature drop. (3 points) 4. If you doubled the length of the fractional distillation column, what would be the advantages and disadvantages? (3 points) 5. Why is better separation of two liquids achieved by slower heating of a mixture? (3 points)
can you help me with all these questions?
4. (25 points) Fractional distillation of a mixture of 1:1 ethyl acetate (B.P. 77.5C) and 1-butanol (B.P. 117.0 °C) was performed, and different fractions were collected. a. Describe in detail, how many different fractions you b. Plot a graph for the fractional distillation data you will c. How can you use IR to check if the final fraction is will collect collect. pure or not? s. (20 points) How do you separate...
can you help me with 1? It will be awesome, if I can get help
on 2.. too. I kind of stuck thanks
This is a simple & fracional distillation lab btw
POST-LAB QUESTIONS: 1) Consider the fractionating column (either packed or unpacked) in the fractional distillation setup. State oOne advantage if the length of this fractionating column was doubled. State two disadvantages if the length of this fractionating column was doubled Why does one observe a drastic drop in...
kindly answer the 3 questions not more than few sentences.
thank you!!
4. When separating two compounds with boiling points that are very close together, how would adding an extra fractional column (one on top of the other) in the fractional distillation setup affect the purity of the fractions? Why? 5. When distilling a water/ethanol mixture, which of the two compounds predominately distills first? Why? 3. What is an alternative to using boiling chips in a distillation?
#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...
2. Three students from your lab have to determine a boiling point of an unknown sample that is supposed to be butanone (Bp.-80°C). Although, all three students have conducted their experiment eorrectly, they came up withe different values: 79°C, 84°C and 75°C. a)Explain what could have beon the source of crror if the sample given to the students is a pure sample and student carried out their measurements properly. b) Propose a solution to correct these diverging data if you...
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