How are the effects of temperature and pres Prerequisite Knowledge: 1) Describe solid, liquid and gas states at the par 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 temperature phase of a substance. The curves indicate a set of temperatures and pressures where the phases e between the two states on opposite sides of the line. For example any point on (temperatur both the sol Critical Bpoint -D. 425 atm Liquid Melting The vapor p the critical Freezing Solid temperatur- which the g The liquid a longer exis supercriti the liquid a comingled Vaporization Condensation 1 atm 0.010atm- Gas Triple poigi Sublimation Deppsition The triple of tempera where all t 89 -55-32 515 Temperature C equilibriun baiovst Various pr used. Rec 1 atm = 1 Key Questions 1) What are the conditions of STP (Standard Temperature and Pressure) 273.15K and 1 atm 2) What is the normal boiling point of the comnound? You Pressure 4) Describe the equilibrium that exists along curve AB at the particulate level. What does it meam 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 conditivn of Hemperaure and ers equilibriunré where all thyee phases exist. at and 89°c. This occurs at I athm 1oc. 6) What are the conditions for the critical point? The critical and point is pressure above Micu the the termperatures Camn.ot 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.? 9) At a constant temperature of 70°C, what phase transition(s) occur(s) as the pressure in increased? nloy 10) Examine the fusion (freezing-melting) curve. As pressure is increased, which state is favored, liquid or solid? The liquid state is favored. mon mol er terw leson ot boan Uiw uoY bogmon od1 to dhico gnind lamon-od eoup Sxon ar bns nodaoup aif 19wans.o1.coneeadg ebsgan reng PP n Iamon ed cnwbonugs