University:
Central Michigan University
Course:
CHM 351 | Physical Chemistry I
Academic year:

2022
Views:

374

Pages:

4
Author:

Alma Stephenson

CARBON DIOXIDE PHASE DIAGRAM Phase Diagrams Major Phases = Solid, Liquid and Gas A phase diagram is a graphical representation of the different phases of a substance which exist at different temperatures and pressures. Temperature is on the x axis and pressure is on the y axis of the graph. The different regions of the diagram correspond to the different phases. Low pressure and High temperature = Gas High pressure and Low temperature = Solid High pressure and High temperature = Liquid The lines in a phase diagram correspond to the different phase changes. These are called the Sublimation, Fusion, and Vaporization lines. Supercritical Fluid: An ambiguous phase with properties of liquids and gases. I A substance is in a supercritical state when the applied pressure is > the critical pressure (Pc) and the applied temperature is > the critical temperature (Tc). The critical point is at the end of the vaporization line.