Liquid Oxygen Phase Diagram
Regions and points of interest in cryogenics.
Liquid oxygen phase diagram. All data wagner ewers et al 1976. C phase co existence normal boiling point nbp triple point tp subcooled liquid supercritical gas solid state. It also shows the saturation pressure with changes in temperature. Hydrogen is not toxic but is a simple asphyxiate by the displacement of oxygen in the air.
We spare you my horrid art work and give the phase diagram as drawn in the intructor s manual. This is the phase diagram for a typical pure substance. Phase diagram of common fluid system phase diagram is a 3d map of the equation of state for an element or compound. In the cases we ll be looking at on this page the phases will simply be the solid liquid or vapour gas states of a pure substance.
Hydrogen is used to make other chemicals in petroleum refining and in oxyhydrogen welding and cutting. Most of the water is condensed out and the gases are further cooled. The curve between the critical point and the triple point shows the oxygen boiling point with changes in pressure. New pressure density temperature measurements and new rational equations for the saturated liquid and vapor densities of oxygen j.
The oxygen phase diagram shows the phase behavior with changes in temperature and pressure. Solid oxygen forms at normal atmospheric pressure at a temperature below 54 36 k 218 79 c 361 82 f. Sketch a phase diagram for oxygen and label all points of interest. Under prolonged exposure to fire or intense heat the containers may rupture violently and rocket.
Thermodyn 1978 10 1161 1172. A phase diagram lets you work out exactly what phases are present at any given temperature and pressure. And the remainder of the water is removed as nitric acid. There is a little guesswork to some parts of a diagram like this especially the smooth curve between the liquid and gas phases and between the solid and gas phases.
The nitric oxide that was produced is oxidized to nitrogen dioxide which is then dimerized into nitrogen tetroxide. Solid oxygen o 2 like liquid oxygen is a clear substance with a light sky blue color caused by absorption in the red part of the visible light spectrum. 2 no 2 n 2 o 4. 2 no o 2 2 no 2.