How are the effects of temperature and pressure on phase tre Prerequisite Knowledge: 1) Describe solid, liquid and gas states at the p Predict the effect of temperature and pressure on solids, liquids and gases. Learning objective: 1.9 Interpret phase diagrams. Model 1: Phase Diagrams A phase diagram is a graphical way to represent the effects of temperatur phase of a substance. The curves indicate a set of temperatures and pressures where the phases between the two states on opposite sides of the line. For examp Critical Bpoint any point c (temperatu both the s -D. 425 atm Liquid Melting The vapor Freezing the critica Solid temperatu which the Vaporization The liquid longer exi supercrit the liquid comingled Condensation 1 atm Gas -A, 0.010atm- Triple point Sublimation Deppsition The triple of temper where all 89 515 -55-32 Temperature € equilibriu sle rorwhoes Various p used. Rec 1 atm = Key Questions 1) What are the conditions of STP (Standard Temperature and Pressure) 273.15 K and 1 atm Pressure bbe the equilibrium that exists along curve AB at the particulate level. What does it mean to be "at equilibrium" in this context? The particles 5) What are the conditions of temperature and pressure for the triple point? The triple point is the condlitivn of temperatlre and pressure where all thyee phases 0quilibrium: This occurs at I atm 6) What are the conditions for the critical point? The critical point is exist. at and 890c. 9°C. the teriperatures icu the Caunot and be pressure abore liquified. TIS OCCurs at 425 atmo and 515°C. 7) At a constant pressure of 0.001 atm, what phase transition(s) occur(s) as the temperature is increased from –273 to 500 °C? 8) At a constant pressure of 5 atm, what phase transition(s) occur as the temperature is increased from -273 to 500 °C.? s biup mie 9) At a constant temperature of 70°C, what phase transition(s) occur(s) as the pressure in increased? 201og 10) Examine the fusion (freezing-melting) curve. As pressure is increased, which state is favored, liquid or solid? The liquid state is favored. he T(oweran9 boc sogrne Insbasie) Ismonmal pr tertw itsao of boan liw uoY bruogmo o lo nibo Roeooo s ara bns noilabup aldnawa 160W P8 to inlog