Question

A sample of 70 mmol Kr(g) expands reversibly and isothermally at 373 K from 5.25 cm^3 to 6.29 cm^3, and the internal energy of the sample is known to increase by 83.5 J. For a given expansion, do you expect the heat absorbed by a real gas to be greater than or less than the heat absorbed by an ideal? Explain your answer. Use the virial equation of state up to the second coefficient B = -28.7 cm^3 mol-1 to calculate w, q, and ∆H for this change of state.

Answer 1