Question

Krypton is contained in a closed cylinder fitted with a weightless piston at 107 K and 1 bar. Heat is added under constant pressure until the volume has doubled in size. What is the change in the molar enthalpy (∆H)? Assume krypton is an ideal gas. From Appendix B in the text, we can assume the heat capacity of krypton is independent of temperature and Cp = 2.5R, where R is the molar gas constant R = 8.314 J/(mol K). For an ideal gas, recall Cy = Cp - R=1.5R. Report your answer in units of kJ/mol using three decimal places.