The Kauzmann paradox at constant volume.

The entropy of o-terphenyl in the liquid and crystalline state heated at constant volume in the range 250-310 K is calculated from calorimetric data at a pressure of 0.1 MPa and equation of state data. The specific heat is found to fit the same functional form as that at 0.1 MPa and leads to a vanishing of the excess entropy at essentially the same Kauzmann temperature as that under isobaric conditions. This adds confirmation to the significance of the Kauzmann extrapolation and contradicts the expectation that constant volume heating would show qualitatitively different behavior from isobaric heating.