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Ashley vapor pressure

# Ashley vapor pressure - Ashley Sanders Performed October...

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Ashley Sanders Performed: October 29 th Submitted: November 5 th Partner: Cody Dunn Instructor: Kenny Bullins Lab 9 Vapor Pressure Objective The objective of the vapor pressure lab is to determine the vapor pressure curve for a liquid as a function of temperature. Experimental Data Temperature ( o C) Length of Bubble (cm) 1.8 4.78 10.2 5.04 21.2 5.38 29.8 5.65 38.8 5.97 50.9 6.68 Sample Calculations To find the vapor pressure: P vap = ((L 2 -(T 2 /T 1 xL 1 ))/L 2 ) x P atm 16.359mmHg= ((5.04cm-(283.2K/274.8Kx4.78))/5.04)x724mmHg 1/T = 1/274.8K LnP = Ln(16.359) = 2.795 Kelvin = 1.8 o C+273 = 274.8 Results and Conclusion Temperature ( o C) Temperature (K) Length of Bubble (cm) Pressure (mmHg) 1/T LnP 1.8 274.8 4.78 0 0.00364 0 10.2 283.2 5.04 16.359 0.00353 2.795 21.2 294.2 5.38 35.332 0.00339 3.565 29.8 302.8 5.65 49.072 0.0033 3.893 38.8 311.8 5.97 66.264 0.00321 4.194 50.9 323.9 6.68 113.361 0.00309 4.731 See attached graphs: Vapor Pressure vs. Temperature and LnP vs. 1/T When temperature is graphed on the X-axis and Vapor Pressure on the Y-axis, I found an almost exponential graph. Therefore as temperature increases, so does vapor pressure. In

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