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:
ln(P1/P2) = -((ΔHvap / R) * (1/T1 - 1/T2))
where R is the ideal gas constant, ΔHvap is the enthalpy of vaporization, T1 and T2 are two different temperatures, and P1 and P2 are the vapor pressures at the respective temperatures. The enthalpy of vaporization can be estimated using Trouton's rule: ΔHvap = (88 J·mol^(-1)·K^(-1)) * Tbp.
P = Torr
Calculate the vapor pressure of methyl ethyl ketone (b.p. 80.0 °C) at the same column temperature.
P = Torr