Calculate the total amount of heat released in units of kilojoules when 25.8 g of ethanol vapor (C2H5OH) at 92.0◦C is cooled to -10.0◦ C. The molar heat capacities of ethanol vapor and liquid ethanol are 65.6 J/◦C.mol and 112.3 J/◦C.mol. The boiling point of ethanol is 78.0 C, the freezing point of ethanol is -112.6 C, the enthalpy of vaporization (∆Hvap) of ethanol is 37.4 kJ /mol and the enthalpy of fusion (∆Hfus) of ethanol is 5.02 kJ/mol.

Question

Calculate the total amount of heat released in units of kilojoules when 25.8 g of ethanol vapor (C2H5OH) at 92.0◦C is cooled to -10.0◦ C. The molar heat capacities of ethanol vapor and liquid ethanol are 65.6 J/◦C.mol and 112.3 J/◦C.mol. The boiling point of ethanol is    78.0 C, the freezing point of ethanol is -112.6 C, the enthalpy of vaporization (∆Hvap) of ethanol is 37.4 kJ /mol and the enthalpy of fusion (∆Hfus) of ethanol is 5.02 kJ/mol.

bobpursley · Answer

And where are you stuck on this?