3604.     WATANABE, M.  Equilibrium in the Reduction of Cobaltous Oxide by Carbon Monoxide.  Bull. Inst. Phys. Chem. Research (Tokyo), vol. 9, 1930, pp. 676-682 (abs. 62-63, in English); Sci. Papers Inst. Phys. Chem. Research (Tokyo), vol. 14, No. 262-263, 1930; Chem. Abs., vol. 25, 1931, p. 3224.

        Equilibrium CoO(s)+CO=Co(s)+CO2 was studied by a static method over the range 563-861.  The observed values of the equilibrium constant Kp=pCO2/pCO range between 174.4 (at 563) and 23.2 (at 861) and agree over the entire range (within 1%) with the following formula, which was derived with the aid of specific heat data:  -RT in Kp=∆F=-11544+8.06 T log T-0.00305 T2+0.00000031 T2-17.65 T.