Equilibrium of Talc with Enstatite and Quartz Robie, Richard A.
Science (American Association for the Advancement of Science),
1964-Mar-06, Volume:
143, Issue:
3610
Journal Article
Peer reviewed
A thermodynamic calculation of the vapor pressure of H$_{2}$O in equilibrium with talc gives p$_{H_{2}O}$ of one atmosphere at 718° ± 15° K in contradiction to the results of Mueller.
An improved sample container for a solution calorimeter is described. The container is an integral part of the stirrer assembly so that the sample can be thermally equilibrated with the solvent ...before dissolution, and is constructed of polytetrafluoroethylene (Teflon) for use in hydrofluoric acid. This design eliminates the "sensible heat" correction and other sources of systematic error. Because the container permits rapid mechanical mixing of the sample in the solvent, relatively coarse size fractions (<325 mesh) can be used in silicate-solution calorimetry.
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