The Vapor Pressure Of Heptane (Bp. 98.0 ?) At The Gas Chromatography Column Temperature Of 930 ? Using The Form Of The Clausius-Clapeyron Equation Shown Below. Ap Where R Is The Ideal Gas Constant, AHwap Is The Enthalpy Of Vaporization, Ti And T2 Are Two Different Temperatures, And P; And P2 Are The Vapor Pressures At The Respective Temperatures. The

 

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Calculate the vapor pressure of heptane (b.p. 98.0 C) at the gas chromatography column temperature of 93.0 C using the form of the Clausius-Clapeyron equation shown below, In R vap 1 where R is the ideal gas constant, AHap is the enthalpy of vaporization, T, and T2 are two different temperatures, and P and P2 are the vapor pressures at the respective temperatures. The enthalpy of vaporization can be estimated using Trouton's rule, AH"vap (88 J mol K-1). Top Number P= 638.6 Torr correct when using Trouton's rule and the Clausius-Clapeyron equation, the temperature must be expressed in Kelvin for the units to cancel properly. The temperature in Kelvin is found be adding 273.15 to the Calculate the vapor pressure of met temperature expressed in degrees Celsius. The ideal gas constant, R. Number P= 649.6 Torr is equal to 8.314 J mol K. Recall that at the boiling point temperature of a compound the vapor pressure is equal to 1 atm or 760 Torr. Be careful not to switch the temperature and pressure values when putting them into the equation. For compounds of the same chemical class, what is the relationship between vapor pressure of a compound and retention in gas chromatography? There is no relationship between vapor pressure and retention. DMC Previous Give Up & View Solution Try Again Next Exit A