The vapor pressure of the ethanol is calculated by remembering that the total pressure in the flask is the sum of the pressure of the air in the flask and the vapor pressure of the ethanol. Calculate the natural logarithm of the vapor pressures, In(P/PⓇ), where PⓇ is 100 kPa. Convert all your temperature readings to Kelvin. Calculate the inverse of the absolute temperatures. Prepare a graph (either by hand or in Excel) with In (P/P) plotted on the y-axis and 1/T (K-¹) plotted on the x- axis. Follow all the rules for properly preparing a scientific graph. Remember to turn in your graph with your report. Determine the line of best fit for your data. Calculate the slope of this line. From the slope calculate the enthalpy of vaporization.
The vapor pressure of the ethanol is calculated by remembering that the total pressure in the flask is the sum of the pressure of the air in the flask and the vapor pressure of the ethanol. Calculate the natural logarithm of the vapor pressures, In(P/PⓇ), where PⓇ is 100 kPa. Convert all your temperature readings to Kelvin. Calculate the inverse of the absolute temperatures. Prepare a graph (either by hand or in Excel) with In (P/P) plotted on the y-axis and 1/T (K-¹) plotted on the x- axis. Follow all the rules for properly preparing a scientific graph. Remember to turn in your graph with your report. Determine the line of best fit for your data. Calculate the slope of this line. From the slope calculate the enthalpy of vaporization.
Chemistry: Principles and Practice
3rd Edition
ISBN:9780534420123
Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Publisher:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Chapter12: Solutions
Section: Chapter Questions
Problem 12.106QE: In the 1986 Lake Nyos disaster (see the chapter introduction), an estimated 90 billion kilograms of...
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![The vapor pressure of the ethanol is calculated by remembering that the total pressure in the flask is the sum of
the pressure of the air in the flask and the vapor pressure of the ethanol.
Calculate the natural logarithm of the vapor pressures, In(P/PⓇ), where P is 100 kPa.
Convert all your temperature readings to Kelvin.
Calculate the inverse of the absolute temperatures.
Prepare a graph (either by hand or in Excel) with In (P/P) plotted on the y-axis and 1/T (K-¹) plotted on the x-
axis. Follow all the rules for properly preparing a scientific graph. Remember to turn in your graph with your
report.
Determine the line of best fit for your data. Calculate the slope of this line.
From the slope calculate the enthalpy of vaporization.
D10
fx
1
~3456
2
7
2
A
Trial 1
Trial 2
Trial 3
Trial 4
Trial 5
B
C
Total Pressure (kPa) Air Pressure (kPa)
104.40
99.67
108.51
101.84
111.47
103.36
113.79
104.00
115.89
104.61
D
Temperature (oC)
21.2
27.6
32.1
34.0
35.8](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fb800c206-0ad5-487d-9ad8-8bf7671ef140%2F28b1e0ac-0f2c-4923-ac6f-0da9468b197e%2Fujish_processed.png&w=3840&q=75)
Transcribed Image Text:The vapor pressure of the ethanol is calculated by remembering that the total pressure in the flask is the sum of
the pressure of the air in the flask and the vapor pressure of the ethanol.
Calculate the natural logarithm of the vapor pressures, In(P/PⓇ), where P is 100 kPa.
Convert all your temperature readings to Kelvin.
Calculate the inverse of the absolute temperatures.
Prepare a graph (either by hand or in Excel) with In (P/P) plotted on the y-axis and 1/T (K-¹) plotted on the x-
axis. Follow all the rules for properly preparing a scientific graph. Remember to turn in your graph with your
report.
Determine the line of best fit for your data. Calculate the slope of this line.
From the slope calculate the enthalpy of vaporization.
D10
fx
1
~3456
2
7
2
A
Trial 1
Trial 2
Trial 3
Trial 4
Trial 5
B
C
Total Pressure (kPa) Air Pressure (kPa)
104.40
99.67
108.51
101.84
111.47
103.36
113.79
104.00
115.89
104.61
D
Temperature (oC)
21.2
27.6
32.1
34.0
35.8
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