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7. A student did a distillation experiment using 40 % aqueous ethanol and presented his result of distillation curve in his lab report as shown below: 100 90 80 70 60 50 40 30 10 20 30 40 Volume Collected (mL) What would be his possible conclusion about his experiment? 1). a good separation of ethanol from water was achieved. 2). the initial distillation temperature was set a little high. 3). the distillation temperature was not well controlled. 4). the concentration of ethanol was too high in the initial solution. 8. What is the main purpose of a fractional column in fractional distillation? 1). to heat the liquid being distilled efficiently 2). to provide more surface area for vapor to condense. 3). to speed up the distillation of the liquid 4). to completely condense the vapor to form a liquid 9. Why is it preferable to allow cold water to enter at the bottom of a water condenser and exit at the top than vice versa? 1). to effectively condense the vapor to form a liquid 2). to allow the water to flow unrestrictedly 3). to separate the liquids being distilled 4). to predict the boiling point of the liquid Temperature (°C)

7. A student did a distillation experiment using 40 % aqueous ethanol and presented his result of distillation curve in his lab report as shown below: 100 90 80 70 60 50 40 30 10 20 30 40 Volume Collected (mL) What would be his possible conclusion about his experiment? 1). a good separation of ethanol from water was achieved. 2). the initial distillation temperature was set a little high. 3). the distillation temperature was not well controlled. 4). the concentration of ethanol was too high in the initial solution. 8. What is the main purpose of a fractional column in fractional distillation? 1). to heat the liquid being distilled efficiently 2). to provide more surface area for vapor to condense. 3). to speed up the distillation of the liquid 4). to completely condense the vapor to form a liquid 9. Why is it preferable to allow cold water to enter at the bottom of a water condenser and exit at the top than vice versa? 1). to effectively condense the vapor to form a liquid 2). to allow the water to flow unrestrictedly 3). to separate the liquids being distilled 4). to predict the boiling point of the liquid Temperature (°C)

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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7. A student did a distillation experiment using 40 % aqueous ethanol and presented his result of distillation curve in his lab report as shown below: 100 90 80 70 60 50 40 30 10 20 30 40 Volume Collected (mL) What would be his possible conclusion about his experiment? 1). a good separation of ethanol from water was achieved. 2). the initial distillation temperature was set a little high. 3). the distillation temperature was not well controlled. 4). the concentration of ethanol was too high in the initial solution. 8. What is the main purpose of a fractional column in fractional distillation? 1). to heat the liquid being distilled efficiently 2). to provide more surface area for vapor to condense. 3). to speed up the distillation of the liquid 4). to completely condense the vapor to form a liquid 9. Why is it preferable to allow cold water to enter at the bottom of a water condenser and exit at the top than vice versa? 1). to effectively condense the vapor to form a liquid 2). to allow the water to flow unrestrictedly 3). to separate the liquids being distilled 4). to predict the boiling point of the liquid Temperature (°C)
Transcribed Image Text:7. A student did a distillation experiment using 40 % aqueous ethanol and presented his result of distillation curve in his lab report as shown below: 100 90 80 70 60 50 40 30 10 20 30 40 Volume Collected (mL) What would be his possible conclusion about his experiment? 1). a good separation of ethanol from water was achieved. 2). the initial distillation temperature was set a little high. 3). the distillation temperature was not well controlled. 4). the concentration of ethanol was too high in the initial solution. 8. What is the main purpose of a fractional column in fractional distillation? 1). to heat the liquid being distilled efficiently 2). to provide more surface area for vapor to condense. 3). to speed up the distillation of the liquid 4). to completely condense the vapor to form a liquid 9. Why is it preferable to allow cold water to enter at the bottom of a water condenser and exit at the top than vice versa? 1). to effectively condense the vapor to form a liquid 2). to allow the water to flow unrestrictedly 3). to separate the liquids being distilled 4). to predict the boiling point of the liquid Temperature (°C)
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