Homework Answers
a) 750C
b) 1150C
C) 830C ( draw a perpendicular from the 50 : 50 molefraction to the liquid(lower curve) curve. From the point of contact draw a line parallel to the mole fraction towards the temperature axis.)
d) 95% of A and 5% of B
e) In this system A is lower boiling compound and thus the vapor above the liquid will be richer in the lower boiling compound.
90% of A and 10% of B.
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Organic Chemistry Lab Experiment 117-02 Distillation and Boiling Points- POST LAB WORKSHEET (5 pts) Consider the...
o-chem lab help 6. a. A mixture of 60 mol % n-propy!cyclohexane and 40 mol %...
o-chem lab help
6. a. A mixture of 60 mol % n-propy!cyclohexane and 40 mol % n-propylbenzene is distilled through a simple distillation apparatus; assume that no fractionation occurs during the distillation. The boiling temperature is found to be 157。C (760 torr) as the first small amount of distillate is collected. The standard vapor pressures of n-propylcyclohexane and n-propylbenzene are known to be 769 torr and 725 torr, respectively, at 1573 °C Calculate the percentage of cach of the two...
(b) Estimate the boiling points (b.p.) of compound C (lower boiling) and compound D (higher...
(b) Estimate the boiling points
(b.p.) of compound C (lower boiling) and compound D (higher
boiling)?
Compound C b.p.
°C Compound D b.p.
°C
A mixture of two compounds was distilled by simple and fractional distillation, with compound C being the lower boiling compound and compound D being the higher boiling compound. Graphs of temperature versus volume of distillate collected are rovided for Distillation 1 and Distillation 2 80 75 O 70 2 65 60 2 55...
1. A student carried out a simple distillation on a compound known to boil at 124°C...
1. A student carried out a simple distillation on a compound known to boil at 124°C and reported an observed boiling point of 116°-117°C. TLC comparison of the product showed that the compound was pure, and a calibration of the thermometer indicated that it was accurate. What procedural error might the student have made in setting up the distillation apparatus? 2. Which method is better for purifying a mixture of two liquids that boil at nearly the same temperature: simple...
REFER TO THE FIGURE BELOW (Fig. 14.3 in the textbook) TO ANSWER QUESTIONS 5-7. B Vapor...
REFER TO THE FIGURE BELOW (Fig. 14.3 in the textbook) TO ANSWER QUESTIONS 5-7. B Vapor 150 - 130 110- Liquid TA Temperature 70- 50- A 100%-80% 0% 20% 60% -40% 40% 20% 0% -60% -80% — 100% B 5. This graph represents the behavior of a mixture of liquids A and B as it is heated, according to its initial composition as shown on the x-axis. The boiling point of pure A is ta, and the boiling point of...
+ AWN t Vacuum Distillation Question 2 °C 400- 700 600 ***** 300- 500 ल 400...
+ AWN t Vacuum Distillation Question 2 °C 400- 700 600 ***** 300- 500 ल 400 200- 300 200 100- 100- Pressure in torr B.P. corrected to 760 torr Observed B.P. A vacuum distillation is being carried out on a mixture of two miscible liquids. Under the reduced pressure used in the separation, liquid A boils at 100°C. If liquid A has a normal boiling point of 200 degrees centigrade and liquid B has a normal boiling point of 300°C,...
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...
Am I correct? Or wrong? SIMPLE AND FRACTIONAL DISTILLATION OF A TWO COMPONENT MIXTURE 1) The...
Am I correct? Or wrong? SIMPLE AND FRACTIONAL DISTILLATION OF A
TWO COMPONENT MIXTURE
1) The boiling point diagram for a mixture of benzene and toluene is shown below. lo Temperature (°C) -tolu Ben للللللللللا70 1 O 10 Mole froction toluene 203040 Mole, fraction benzene 0 30 a) What is the initial boiling point of a solution that contains 50% toluene and 50% benzene? (2 points) The initial boiling point of 50% Toluene & Benzene is 90°c b) What is...
(6) 6. Use the vapor liquid composition curve, below, for a minture of eyelohexane and toluene...
(6) 6. Use the vapor liquid composition curve, below, for a minture of eyelohexane and toluene to ansiver the following questions. a. What is the boiling point of pure 110 toluene? Vapor What is the boiling point of a mixture of 58% cyclohexane and 42% toluene? b. 100 100 c. If a simple distillation is performed on a mixture of 58% cyclohexane and 42% toluene, what is the composition of the vapor that condenses to form the first drop of...
I need the answer for all of the questions please:) thats for oragnic chemistry lab What...
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)...
o-chem lab help
6. a. A mixture of 60 mol % n-propy!cyclohexane and 40 mol % n-propylbenzene is distilled through a simple distillation apparatus; assume that no fractionation occurs during the distillation. The boiling temperature is found to be 157。C (760 torr) as the first small amount of distillate is collected. The standard vapor pressures of n-propylcyclohexane and n-propylbenzene are known to be 769 torr and 725 torr, respectively, at 1573 °C Calculate the percentage of cach of the two...
(b) Estimate the boiling points
(b.p.) of compound C (lower boiling) and compound D (higher
boiling)?
Compound C b.p.
°C Compound D b.p.
°C
A mixture of two compounds was distilled by simple and fractional distillation, with compound C being the lower boiling compound and compound D being the higher boiling compound. Graphs of temperature versus volume of distillate collected are rovided for Distillation 1 and Distillation 2 80 75 O 70 2 65 60 2 55...
1. A student carried out a simple distillation on a compound known to boil at 124°C and reported an observed boiling point of 116°-117°C. TLC comparison of the product showed that the compound was pure, and a calibration of the thermometer indicated that it was accurate. What procedural error might the student have made in setting up the distillation apparatus? 2. Which method is better for purifying a mixture of two liquids that boil at nearly the same temperature: simple...
REFER TO THE FIGURE BELOW (Fig. 14.3 in the textbook) TO ANSWER QUESTIONS 5-7. B Vapor 150 - 130 110- Liquid TA Temperature 70- 50- A 100%-80% 0% 20% 60% -40% 40% 20% 0% -60% -80% — 100% B 5. This graph represents the behavior of a mixture of liquids A and B as it is heated, according to its initial composition as shown on the x-axis. The boiling point of pure A is ta, and the boiling point of...
+ AWN t Vacuum Distillation Question 2 °C 400- 700 600 ***** 300- 500 ल 400 200- 300 200 100- 100- Pressure in torr B.P. corrected to 760 torr Observed B.P. A vacuum distillation is being carried out on a mixture of two miscible liquids. Under the reduced pressure used in the separation, liquid A boils at 100°C. If liquid A has a normal boiling point of 200 degrees centigrade and liquid B has a normal boiling point of 300°C,...
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...
Am I correct? Or wrong? SIMPLE AND FRACTIONAL DISTILLATION OF A
TWO COMPONENT MIXTURE
1) The boiling point diagram for a mixture of benzene and toluene is shown below. lo Temperature (°C) -tolu Ben للللللللللا70 1 O 10 Mole froction toluene 203040 Mole, fraction benzene 0 30 a) What is the initial boiling point of a solution that contains 50% toluene and 50% benzene? (2 points) The initial boiling point of 50% Toluene & Benzene is 90°c b) What is...
(6) 6. Use the vapor liquid composition curve, below, for a minture of eyelohexane and toluene to ansiver the following questions. a. What is the boiling point of pure 110 toluene? Vapor What is the boiling point of a mixture of 58% cyclohexane and 42% toluene? b. 100 100 c. If a simple distillation is performed on a mixture of 58% cyclohexane and 42% toluene, what is the composition of the vapor that condenses to form the first drop of...
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)...
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