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Phase Diagram for Water. Water is a unique substance in many ways. One of these special properties is the fact that solid water (ice) is less dense than liquid water just above the freezing point. The phase diagram for water is shown in the figure below.
- 12.4: Phase Diagrams
The Phase Diagram of Water. Figure \(\PageIndex{2}\) shows...
- 12.4: Phase Diagrams
Phase diagrams show the preferred physical states of matter at different temperatures and pressure. Within each phase, the material is uniform with respect to its chemical composition and physical state.
8.1 Phase Diagram of Water. 3 phases: solid, liquid, vapour. Triple point: 4.579 Torr (~603Pa), 0.0098oC. phase phase coexistence, 2 phases point – 3 phases. 8.2 Gibbs Phase Rule. Gibbs' phase rule describes the possible # of degrees of freedom (F) in a closed system at equilibrium, in terms of the number of separate phases (P)
12 Ιουλ 2023 · The Phase Diagram of Water. Figure \(\PageIndex{2}\) shows the phase diagram of water and illustrates that the triple point of water occurs at 0.01°C and 0.00604 atm (4.59 mmHg).
Since water is a “universal” solvent, water is easily polluted. Water readily dissolves compounds (e.g. heavy metal ions, pesticides), and hard to purify. Water is critical for the three-dimensional structure and activity of proteins, nucleic acids.
Sublimation, Saturation and Melting Lines. Phase Diagram Data and Equations (Excel file) (68 KB. phase_diagram.xls) Phase Diagram Chart (PDF file)
Key Concepts: Phase changes going from left to right (Æ) , including melting, vaporization, and sublimation, require the absorption of energy (heating). Phase changes going from right to left (Å), including freezing, condensation and deposition, involve the removal of energy (cooling).
