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Liquids that readily evaporate are classified as volatile liquids. Such liquids have measurable vapor pressures at or near room temperature. If the vapor pressure of two or more liquids are compared at the same temperature, the more volatile liquid will have the higher vapor pressure.   The vapor pressure of acetone is 24.6 kPa (read: kiloPascals) at 293 K. Is acetone more or less volatile than the organic liquid used in this activity? Explain or demonstrate.

Liquids that readily evaporate are classified as volatile liquids. Such liquids have measurable vapor pressures at or near room temperature. If the vapor pressure of two or more liquids are compared at the same temperature, the more volatile liquid will have the higher vapor pressure.   The vapor pressure of acetone is 24.6 kPa (read: kiloPascals) at 293 K. Is acetone more or less volatile than the organic liquid used in this activity? Explain or demonstrate.

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
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Liquids that readily evaporate are classified as volatile liquids. Such liquids have measurable vapor pressures at or near room temperature. If the vapor pressure of two or more liquids are compared at the same temperature, the more volatile liquid will have the higher vapor pressure.

 

The vapor pressure of acetone is 24.6 kPa (read: kiloPascals) at 293 K. Is acetone more or less volatile than the organic liquid used in this activity? Explain or demonstrate.

 

 

4.5 4 y = -4882.6x + 19.736 R = 1 3.5 2.5 2 1.5 0.5 0.0032 0.00325 0.0033 0.00335 0.0034 0.00345 0.0035 0.00355 1/т, к1 In (Pvapor)
Transcribed Image Text:4.5 4 y = -4882.6x + 19.736 R = 1 3.5 2.5 2 1.5 0.5 0.0032 0.00325 0.0033 0.00335 0.0034 0.00345 0.0035 0.00355 1/т, к1 In (Pvapor)
Given, Pvapor- Pequil - Pinitial The first table can be filled as below: T,°C Pinitial (mm Hg) Pequil (mm Hg) Pvapor (mm Hg) Run 1 11.9 736.8 750.4 750.4 - 736.8 = 13.6 2 19.5 736.6 757.7 757.7 - 736.6 =21.1 28.4 736.7 771.2 771.2 - 736.7 = 34.5 4 36.3 736.7 789.2 789.2 - 736.7 = 52.5 The second table can be filled as below: Run T, °C Т, К 1/T, к1 Pvapor (mm Hg) In(Pvapor) 1 11.9 11.9+273.15 = 285.05 1/285.05 = 0.00350816 13.6 In(13.6) = 2.610 2 19.5 19.5 + 273.15= 292.65 1/292.65 = 0.00341705 21.1 In(21.1) = 3.0493 3 28.4 28.4 + 273.15 = 301.55 1/301.55 = 0.00331620 34.5 In(34.5) = 3.5409 4 36.3 36.3 + 273.15= 309.45 1/309.45 = 0.00323154 52.5 In(52.5) =3.9608 3.
Transcribed Image Text:Given, Pvapor- Pequil - Pinitial The first table can be filled as below: T,°C Pinitial (mm Hg) Pequil (mm Hg) Pvapor (mm Hg) Run 1 11.9 736.8 750.4 750.4 - 736.8 = 13.6 2 19.5 736.6 757.7 757.7 - 736.6 =21.1 28.4 736.7 771.2 771.2 - 736.7 = 34.5 4 36.3 736.7 789.2 789.2 - 736.7 = 52.5 The second table can be filled as below: Run T, °C Т, К 1/T, к1 Pvapor (mm Hg) In(Pvapor) 1 11.9 11.9+273.15 = 285.05 1/285.05 = 0.00350816 13.6 In(13.6) = 2.610 2 19.5 19.5 + 273.15= 292.65 1/292.65 = 0.00341705 21.1 In(21.1) = 3.0493 3 28.4 28.4 + 273.15 = 301.55 1/301.55 = 0.00331620 34.5 In(34.5) = 3.5409 4 36.3 36.3 + 273.15= 309.45 1/309.45 = 0.00323154 52.5 In(52.5) =3.9608 3.
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