Dissociation Pressures of the Phase CO₂· 5 3/4 H₂O

Abstract

The dissociation pressure of the solid phase CO2 · 5\documentclass{aastex} \usepackage{amsbsy} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{bm} \usepackage{mathrsfs} \usepackage{pifont} \usepackage{stmaryrd} \usepackage{textcomp} \usepackage{portland,xspace} \usepackage{amsmath,amsxtra} \usepackage{wasysym} \pagestyle{empty} \DeclareMathSizes{10}{9}{7}{6} \begin{document}$$\frac{3}{4}$$\end{document} H2O has been measured to 2,000 bars. This dissociation curve rises from 45 bars at 10° C. to 2,000 bars at 19.7° The solid hydrate freezes from immiscible water-rich and rich liquids over this pressure and temperature interval. ΔV of dissociation ranges from 24 cc/mole to 4 cc/mole. The density of the hydrate calculated from the dissociation pressure curve is in good agreement with the density obtained by other investigators from X-ray measurements. The application of the phase relations in the system CO2-H2O to the study of fluid inclusions in discussed.