Heat capacity of solid zinc from 298.15 to 692.68 K and of liquid zinc from 692.68 to 940 K: thermodynamic function values

摘要

The heat capacity of zinc has been determined by adiabatic calorimetry from 298.15 to 940 K. For crystalline zinc C-p,C-m increases from 25.47 J K-1 mol(-1) at the former temperature to an evenly extrapolated value of 30.96 J K-1 mol(-1) at the triple-point temperature 692.681 K (ITS-90). The estimated heat capacity increment of fusion is 2.46 J K-1 mol(-1). For liquid zinc the heat capacity decreases from 33.42 J K-1 mol(-1) at T-fus to 32.31 J K-1 mol(-1) at 940 K. Thermodynamic function values have been derived and are tabulated for selected temperatures after revaluation of earlier low temperature results. (C) 2002 Elsevier Science B.V. All rights reserved. [References: 39]