Vapor Pressure

# Vapor Pressure - Vapor Pressure Objective The objective of...

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Vapor Pressure Objective The objective of this lab was to determine the vapor pressure curve for a liquid as a function of temperature Experimental Data Length (cm) Temperature (°C) 4.25 5.0 4.25 15.0 4.78 25.0 5.25 35.0 5.72 45.0 6.62 55.0 P atm = 715mmHG Sample Calculations Vapor Pressure: P vap = [ L 2 - ((T 2 /T 1 ) * L 1 ) ] x P atm L 2 P vap = 52.5mm – ((308K/278K) * 42.5mm) = .103 * 714 mmHg = 73.6 mmHG 52.5mm L 1 – length of the bubble at the lowest observed temperature L 2 – length of the bubble at the higher temperature T 1 – lowest observed temperature (converted to Kelvin) T 2 – higher temperature (converted to Kelvin) Results and Conclusions Temp (°C) Temp (°K) Length(mm) P vap (mmHg) Ln (P) 1/T (K -1 ) 5.0 278.0 42.5 0 - 0.00350 15.0 288.0 42.5 0 - 0.00347 25.0 298.0 47.8 33.5 3.51 0.00336 35.0 308.0 52.5 73.6 4.30 0.00325 45.0 318.0 57.2 107.2 4.67 0.00314 55.0 328.0 66.2 173.2 5.15 0.00305 The relationship between the temperature and pressure was graphed and showed that the

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Vapor Pressure - Vapor Pressure Objective The objective of...

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