Mercury: enthalpies and thermodynamics



Thermodynamic data

State Δf Δf CpH 298.15‑H°0
Units kJ mol‑1 kJ mol‑1 J K‑1 mol‑1 J K‑1 mol‑1 kJ mol‑1
Liquid *0 0 *75.90 ± 0.12 27.98 *9.342 ± 0.008
Gas *61.38 ± 0.04 31.85 *174.971 ± 0.005 19.66 *6.197 ± 0.001
Gas (Hg2) 109 68 287.9 37.4


This table gives a few thermodynamic data. Most values are those given in the NBS technical notes (reference 1) after conversion from the units used within those notes. Values labelled with an asterisk (*) are Committee on Data for Science and Technology (CODATA) agreed values for the thermodynamic properties of key chemical substances (reference 2). These values are published in a number of places including the WWW (reference 3).


  1. R.H. Schumm, D.D. Wagman, S. Bailey, W.H. Evans, and V.B. Parker in National Bureau of Standards (USA) Technical Notes 270-1 to 270-8, 1973.
  2. J.D. Cox, DD., Wagman, and V.A. Medvedev, CODATA Key Values for Thermodynamics, Hemisphere Publishing Corp., New York, USA, 1989.

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