Equilibrium at Low Pressure in the Reduction of Barium Oxide by Carbon

Abstract

An experimental scheme to investigate the reduction equilibrium of barium oxide by carbon is described and analyzed critically. Exploratory results at 950° support the analysis and indicate equilibrium at carbon monoxide pressures below 100μ with barium vapor pressures in the range 0.1 to 0.3μ. The resulting value for the free energy of formation of barium oxide is −114,000 cal. per mole.