11-Phase Diagram of Pure Substance

11-Phase Diagram of Pure Substance - BioE Phase Diagram of...

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Molecular BioEngineering Laboratory BioE Phase Diagram of Pure Substance ± 相圖 ± 如何繪製相圖 - 實驗法 ± 如何繪製相圖 -Clapeyron Eqn. ± 相平衡的維持 ± 不同溫度下的蒸氣壓 -Clausius Clapeyron Eqn. ± 額外加壓對蒸氣壓的影響
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BioE Figure 8.10 The T-P phase diagram for CO 2 (not to scale)
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BioE Figure 8.7 The P-T diagram for H 2 O is shown pressures up to 3.5 × 10 10 bar.
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BioE Figure 8.8 Two different crystal structures are shown. Hexagonal ice (left) is the stable form of ice under atmospheric conditions. Ice VI (right) is only stable at elevated pressures as shown in the phase diagram of Figure 8.7. The dashed lines indicate hydrogen bonds.
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BioE Figure 8.9 The P-T phase diagram for sulfur (not to scale).
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BioE Carbon
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BioE Figure 8.11 A P-V phase diagram displays single- and two- phase coexistence region, a critical point, and a triple line. The two- phase coexistence areas are colored.
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BioE Figure 8.12 A P-V diagram for an ideal gas. Constant pressure, constant volume, and constant temperature paths are shown as black, red, and blue curves, respectively.
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BioE Figure 8.13 A P-V diagram is shown for a substance that contracts on freezing. The indicated processes are discussed in the text.
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BioE 如何繪製三相圖?
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BioE Figure 8.5 The temperature versus heat curve is shown for the process corresponding to path a in Figure 8.4. The temperature rises linearly with q P in single-phase regions, and remains constant along the two-phase curves as the relative amounts of the two phases in equilibrium change (not to scale). 實驗法繪製三相圖
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BioE Figure 8.6 The temperature versus heat curve is shown for the process corresponding to path b in figure 8.4. The temperature rises linearly with q P in single-phase regions, and remains constant along the two- phases curves as the relative amounts of the two-phases in equilibrium change (not to scale).
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BioE First and second order phase transition ± First order phase transition z Discontinueous first derivatives of Gibbs free energy ± Second order phase transition z Discontinueous second derivatives of Gibbs free energy V P G T H T T G S T G T P P = = = , ) / ( , 2 P P P T V T P G T C T G = = 2 2 2 ,
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BioE Differential Scanning Calorimeter
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BioE Thermodynamic characteristics of Phase transition First order phase transition Second order phase transition
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BioE Helium
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BioE 2.0 14.0 12.0 10.0 8.0 6.0 4.0 1.0 2.0 3.0 0.0 T (K) S (J K -1 mol )
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BioE λ phase transition
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BioE
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BioE Conditions for Phase Equilibrium At equilibrium, ( ) () () () ( ) 0 , 0 0 , 0 0 , , , , , = = = = = p T V T p S V S V U dG dA dH dU dS From the 2nd law of thermodynamics
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BioE Thermodynamic functions + + = + = + + = + = = = = = i i n V S i i i n V S i i i n V S i i i n V S i dn n
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This note was uploaded on 11/11/2010 for the course CHE CH2005 taught by Professor 曹恒光 during the Spring '10 term at National Central University.

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11-Phase Diagram of Pure Substance - BioE Phase Diagram of...

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