Direct measurements of the Gibbs free energy of OH using a cw tunable laser
Abstract
This paper describes an absorption measurement for determining the Gibbs free energy of OH generated in a mixture of water and oxygen vapor. These measurements afford a direct verification of the accuracy of thermochemical data of H2O at high temperatures and pressures. Our results indicate that values for the heat capacity of H2O obtained through numerical computations are correct within our experimental uncertainty of 0.15 cal/mole °K.
- Publication:
-
Journal of Chemical Physics
- Pub Date:
- August 1979
- DOI:
- 10.1063/1.438484
- Bibcode:
- 1979JChPh..71.1582K
- Keywords:
-
- Absorption Spectroscopy;
- Continuous Wave Lasers;
- Gibbs Free Energy;
- Hydroxyl Radicals;
- Laser Spectroscopy;
- Thermochemical Properties;
- Deep Space;
- Electron Transitions;
- Line Shape;
- Specific Heat;
- Thermodynamic Equilibrium;
- Voigt Effect;
- Water;
- Atomic and Molecular Physics;
- 82.60.-s;
- 33.20.Lg;
- 89.90.+n;
- Chemical thermodynamics;
- Ultraviolet spectra;
- Other topics in areas of applied and interdisciplinary physics