Define the cpm of the vapor and liquid phases

Reference no: EM13196703

Benzene (l) has a vapor pressure of 0.1269 bar at 298.15 K and an enthalpy of vaporization of 30.72kJmol^-1. The Cpm of the vapor and liquid phases at that temperature are 82.4 and 136.0 J K^-1 mol^-1, respectively. Calculate the vapor pressure of C6H6(l) at 340.0 K assuming

a. that the enthalpy of vaporization does not change with temperature. Answer: 0.583 bar

b. that the enthalpy of vaporization at temperature T can be calculated from the equation deltaHvaporization (T)= deltaHvaporization (T0) + deltaCp(T-T0) assuming that deltaCp does not change with temperature. Answer: 0.553 bar

Reference no: EM13196703

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