P HASE DIAGRAMS OF PURE SUBSTANCE Roberto Carlos García Zúñiga
CONTENTS INTRODUCTION THE BASIC PHASE DIAGRAM PHASE DIAGRAMS THE CHANGES PHASES SOLID LIQUID LIQUID GASEOUS SOLID GASEOUS CRITICAL POINT TRIPLE POINT
INTRODUCTION A phase can be a term easy as solid, liquid or gas, for example a glass with ice and water this present a phase, but the term is used more generally for description the two or more phases for example oil with water and other combinations.
THE BASIC PHASE DIAGRAM Diagrams of phase a diagram of phase allow working the phases are present an any given pressure and temperature.
SOLID LIQUID When we have a solid a constant pressure, the temperature increase the solid will pass a liquid state this is called fusion, but the inverse process of liquid a solid is called congelation.
LIQUID GASEOUS the liquid a gaseous state is when we increase the temperature a constant pressure is called evaporation and its inverse process when decrease its temperature the gas is converted in liquid is called condensation.
SOLID GASEOUS solid pass a an gaseous state is when we decrease the pressure and increase a temperature that process is called sublimation and inverse process is called deposition.
CRITICAL POINT : this point happens when coexist two matter states, the liquid and gaseous, means it has properties of both liquid state and the gaseous state.
TRIPLE POINT this happens when coexist the three matter states, solid, liquid and gaseous.
Phase diagrams are easiest water and carbon dioxide because its regions, critical point y triple point are very similar. Phase diagram of water
Phase diagram of carbon bioxide
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