. A commentary on the scientific writings of J. Willard Gibbs. Gibbs, Joniah Willard, 1839-1908; Science; Thermodynamics. 270 MOREY ART. G mined pressure-temperature curves; and Fig. 8, a diagrammatic representation of the same curves. When equation (16) is applied to the ternary equilibrium K2O • SiOj • 5H2O + KzOSiOz ^20Si<^y2^2. /fsOSiO^H^ H20 2SfOg K20-4Si'02 HzO SiOp Fig. 5. The ternary system, H2O-K2O • SiOz-SiOa. The full lines are the isothermal polybaric saturation curves at the temperatures indicated. The broken curves are the boundary curves between the various fields. K2O-28102
. A commentary on the scientific writings of J. Willard Gibbs. Gibbs, Joniah Willard, 1839-1908; Science; Thermodynamics. 270 MOREY ART. G mined pressure-temperature curves; and Fig. 8, a diagrammatic representation of the same curves. When equation (16) is applied to the ternary equilibrium K2O • SiOj • 5H2O + KzOSiOz ^20Si<^y2^2. /fsOSiO^H^ H20 2SfOg K20-4Si'02 HzO SiOp Fig. 5. The ternary system, H2O-K2O • SiOz-SiOa. The full lines are the isothermal polybaric saturation curves at the temperatures indicated. The broken curves are the boundary curves between the various fields. K2O-28102 + L + V (curve 6c, Figs. 5-8), the curve which pro- ceeds from the quintuple point Q2to quintuple point Qx, it becomes di (t;' - V) -\- \— W - v^) - -— {v" - v^) i-121 U2I in which S' and S" represent the compounds K2O • Si02 • ^H20 and K20-2Si02- At Q2, the terms (n^ - 17") and (v^ - V), both of which are negative and much larger than the other terms, preponderate; dp/dt is positive. As with increasing tem-. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Donnan, F. G. (Frederick George), 1870-1956; Haas, Arthur Erich, 1884-1941. New Haven, Yale University Press; London, H. Milford, Oxford University Press
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