Calculate the Entropy of Vaporization of Ethanol, C₂H₅OH, at 298

Multiple Choice

Calculate the entropy of vaporization of ethanol, C₂H₅OH, at 298 K from the following data. The constant-pressure molar heat capacities of ethanol as liquid and vapour are 111.46 and 65.44 J K^-1 mol^-1 respectively. The enthalpy of vaporization of ethanol at its boiling temperature, 352 K, is 38.56 kJ mol^-1.

A) +117.21 J K^-1 mol^-1
B) +139.01 J K^-1 mol^-1
C) +109.55 J K^-1 mol^-1
D) +29.46 J K^-1 mol^-1