834. ---------------.[EMMETT, P. H., AND SCHULTZ, J. F.] Equilibria in the Iron-Hydrogen-Oxygen System. Indirect Calculation of the Water-Gas Equilibrium Constant. Jour. Am. Chem. Soc., vol. 52, 1930, p. 4268-4285; Chem. Abs., vol. 25, 1931, p. 453.

834. ---------------. [EMMETT, P. H., AND SCHULTZ, J. F.] Equilibria in the Iron-Hydrogen-Oxygen System. Indirect Calculation of the Water-Gas Equilibrium Constant. Jour. Am. Chem. Soc., vol. 52, 1930, p. 4268-4285; Chem. Abs., vol. 25, 1931, p. 453.

The equilibrium constant K=P_H2O/P_H2 for the reaction FeO+H₂=Fe+H₂O was determined by a flow method. At 600°, 700°, 800°, 900°, and 1,000°, K is, respectively, 0.332, 0.422, 0.499, 0.594, and 0.669. For the reaction Fe₃O₄+H₂=3FeO+H₂O, K is 1.18 at 700° and 2.37 at 800°. The water-gas constants, calculated by combining these Fe-H-O equilibrium values with those for the Fe-C-O system, agree excellently with constants measured directly by Neumann and Kohler.