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Entropy of ethanol. Ethanol (C2H5OH) vapor at 0.5 bar and 78∘C is compressed isothermally to 2 bar in a reversible process in a closed system. a. Draw a qualitative PV graph and show the path of the process. Mark all the relevant pressures and isotherms b. Calculate the enthalpy change of the ethanol. c. Calculate the entropy change of the ethanol. d. What is the amount of heat exchanged between the ethanol and the surroundings during the compression? Assume the ethanol vapor is an ideal gas with CP = 45 J/mol/K. The saturation pressure of ethanol at 78∘C is 1 bar.

Entropy of ethanol. Ethanol (C2H5OH) vapor at 0.5 bar and 78∘C is compressed isothermally to 2 bar in a reversible process in a closed system. a. Draw a qualitative PV graph and show the path of the process. Mark all the relevant pressures and isotherms b. Calculate the enthalpy change of the ethanol. c. Calculate the entropy change of the ethanol. d. What is the amount of heat exchanged between the ethanol and the surroundings during the compression? Assume the ethanol vapor is an ideal gas with CP = 45 J/mol/K. The saturation pressure of ethanol at 78∘C is 1 bar.

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Entropy of ethanol. Ethanol ( C 2 H 5 O H ) vapor at 0.5 b a r and 78 ∘ C is compressed isothermally to 2 bar in a reversible process in a closed system. a. Draw a qualitative PV graph and show the path of the process. Mark all the relevant pressures and isotherms b. Calculate the enthalpy change of the ethanol. c. Calculate the entropy change of the ethanol. d. What is the amount of heat exchanged between the ethanol and the surroundings during the compression?
Assume the ethanol vapor is an ideal gas with C P = 45 J / m o l / K . The saturation pressure of ethanol at 78 ∘ C is 1 bar.

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