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phy141kk:lectures:32-18 [2018/11/28 08:00]
kkumar
phy141kk:lectures:32-18 [2018/11/28 08:00] (current)
kkumar [A general phase diagram for a liquid-gas-solid system]
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 The lines represent conditions where 2 phases co-exist, referred to as a phase boundary. Where two lines intersect we have a triple-point. A critical point is a point where a phase boundary disappears. At temperatures above the critical point the liquid and vapor phases are indistinguishable,​ we call this a supercritical fluid, or more simply a gas. The dotted line shows the behavior of water, which is anomalous (ie. it expands upon freezing). ​ The lines represent conditions where 2 phases co-exist, referred to as a phase boundary. Where two lines intersect we have a triple-point. A critical point is a point where a phase boundary disappears. At temperatures above the critical point the liquid and vapor phases are indistinguishable,​ we call this a supercritical fluid, or more simply a gas. The dotted line shows the behavior of water, which is anomalous (ie. it expands upon freezing). ​
  
-A phase region on a phase diagram represents the equilibrium state of the material under the stated conditions. Materials can, however, exist in non-equilibrium states and we will try to produce one by the end of the lecture.+A phase region on a phase diagram represents the equilibrium state of the material under the stated conditions. Materials can, however, exist in non-equilibrium states
 + 
 +/* 
 + and we will try to produce one by the end of the lecture. 
 +*/
  
 ===== PV Diagram ===== ===== PV Diagram =====
phy141kk/lectures/32-18.txt · Last modified: 2018/11/28 08:00 by kkumar
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