. Transactions. 3 Pressure Fig. 10.—Experiment Series 15, No. 3. Temperature 853° C. Since the coordinates of the point b in the P-x diagram are x = and P = , X (2 - ) = the corrected value of Po on an assumption that no oxidation had takenplace during the soot deposition. The second pause of pressure change occurs at a point the coordi-nates of which are x = and P = This requires Po = X (2 - ) = , A. MATSUBARA 35 if tlic point c lies on tlie PVFesC isotherinal. Tliis value of Po agreesaccurately with the corrected value of
. Transactions. 3 Pressure Fig. 10.—Experiment Series 15, No. 3. Temperature 853° C. Since the coordinates of the point b in the P-x diagram are x = and P = , X (2 - ) = the corrected value of Po on an assumption that no oxidation had takenplace during the soot deposition. The second pause of pressure change occurs at a point the coordi-nates of which are x = and P = This requires Po = X (2 - ) = , A. MATSUBARA 35 if tlic point c lies on tlie PVFesC isotherinal. Tliis value of Po agreesaccurately with the corrected value of initial pressure. As there are noother explanations to the phenomena, the assumptions should be a matter of fact, the curves ab and he in Fig. 11 make a continuouscurve, the equation of which is xP = — 2( — P). Then, thethird pause in pressure change in this experiment must correspond to theperiod of FeO-FcsC equilibrium, and the pressure is lowest at this period,as shown in Fig. 0 10 20 3U 40 50 60 70 80 90 WO 110 120 £Time in Min. Fig. 11.—Experiment Series 15, No. 4. Temperature 772° C. The actual magnitude of pressures in various states of equilibrium inthis series of experiments may perhaps be complex functions of the com-position of the solid phase, temperature, velocities of several reactions,etc. In general, the larger the oxygen content of the sohd phase, themore pronounced is the displacement to the right of the equilibriumpoints in the P-x diagram, and the increase in pressure begins at theearher period, hence the lowest pressure occurs at the earher reaction ofthe series. A higher oxide of iron, especially when it is in a finely dividedform, causes scarcely any depression of pressure at the instant when it iscovered by CO in a confined space. If a solid phase contains such a small 36 CHEMICAL EQUILIBRIUM BETWEEN IRON, CARBON, AND OXYGEN quantity of oxygen that it causes a FeO-FesC equilibrium when it iscovered by CO, the third p
Size: 1456px × 1717px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bo, bookcentury1800, bookdecade1870, booksubjectmineralindustries
