PEERASSISTEDSTUDYSESSIONS Facil:MadiWright Course:CHEM1002A&V Week:5 Email:[email protected]:ML408OfficeHour:Tuesdays1:00-2:00pm Lectures:PrinciplesofChemicalEquilibrium Textbook:Chapter14 Topics: • Equilibrium • EquilibriumConstant • ReactionQuotient • ICETables • LeChâtelier’sPrinciple Opener (5minutes) Howdidthemidtermgo?! TwoTruthsandaLie! (20minutes) Determinewhichstatementisalie,andexplainwhy. Introduction 1. Mostreactionsarereversible 2. Iftheconcentrationsarenotchanging;forwardrate=reverserate 3. Equilibriumisaconstantprocess HeterogeneousEquilibrium 1. Solidphasesareneverincludedintheequilibriumconstant 2. Liquidphasesareneverincludedintheequilibriumconstant 3. Solidandliquidstatesareincludedintheequilibriumconstantonlyifthey aretheonlyphasesinthereaction PropertiesofEquilibriumConstants 1. Itisrelatedtothestoichiometryofthebalancednetreaction 2. Itappliesonlyatequilibrium 3. Itisdependentofitsinitialconditions Keq 1. ThisconstantsunitsareM 2. Keqisdimensionless 3. Keq=[C]c[D]d/[A]a[B]b EquilibriumSystems 1. IfΔG°<0then,reactants>products 2. IfΔG°<0then,reactants<products 3. IfΔG°≈0the,reactants≈products DISCLAIMER:PASSworksheetsaredesignedasastudyaidforuseinPASSworkshopsonly.Worksheetsmay containerrors,intentionalorotherwise.Itisuptothestudentstoverifytheinformationcontainedwithin. PEERASSISTEDSTUDYSESSIONS Facil:MadiWright Course:CHEM1002A&V Week:5 Email:[email protected]:ML408OfficeHour:Tuesdays1:00-2:00pm ICETables 1. KcanbesimplifiedifK<x10-2 2. ICEstandsforInitial,ChangeandEquilibrium 3. Whenusingthequadraticformula,youcanneverhaveanegative concentration PredictingEffectsofPhysicalChanges 1. Increasingthetemperatureshiftstheequilibriumintheendothermic direction 2. Raisingpressuremovestheequilibriumtohigherpressure 3. Loweringtemperaturemovestheequilibrium,increasingtheyieldand reducestherate LeChâtelier’sPrinciple 1. AnychangeinconditionsthatincreasesthevalueofQcausesthereactionto consumeproductsandproducereactionsuntilequilibriumisre-established 2. AnychangeintheconditionsthatdecreasesthevalueofQcausesthe reactiontoformproductsandconsumereactantsuntiltheequilibriumisreestablished 3. AnychangeinamountsthathasnoeffectonthevalueofQwillstillhavea slighteffectontheequilibriumposition RelevantEquations (5minutes) • Let’sbrainstormequationstogetherthatcouldbeusedinthelonganswer calculations DISCLAIMER:PASSworksheetsaredesignedasastudyaidforuseinPASSworkshopsonly.Worksheetsmay containerrors,intentionalorotherwise.Itisuptothestudentstoverifytheinformationcontainedwithin. PEERASSISTEDSTUDYSESSIONS Facil:MadiWright Course:CHEM1002A&V Week:5 Email:[email protected]:ML408OfficeHour:Tuesdays1:00-2:00pm LongAnswerQuestions (40minutes) 1.Theequilibriumconstantfortheprotontransferreactionofbenzoicacidis calculatedtobe6.4×10-5.Giventhefollowingreaction,calculatetheequilibrium concentrationofbenzoicacidandthebenzoateanionsina5.0×10-2Maqueous solutionoftheacid. H2O(l)+C6H5CO2H(aq)!"C6H5CO2-(aq)+H3O+(aq) DISCLAIMER:PASSworksheetsaredesignedasastudyaidforuseinPASSworkshopsonly.Worksheetsmay containerrors,intentionalorotherwise.Itisuptothestudentstoverifytheinformationcontainedwithin. PEERASSISTEDSTUDYSESSIONS Facil:MadiWright Course:CHEM1002A&V Week:5 Email:[email protected]:ML408OfficeHour:Tuesdays1:00-2:00pm 2.At298K,Keq=0.0900forthereactionH2O(g)+Cl2O(g)!"2HOCl(g). (a)CalculatetheequilibriumpartialpressureofeachgasifinitiallypH2O=pCl2O= 100PaandpHOCl=0. (b)Calculatethestandardfreeenergychangeofthisreaction(kJmol-1)at298K. Closer:StressedOut?! (5minutes) Academic Me:[email protected] Bob:[email protected] Gaby:[email protected] SSSC:[email protected] SASC:[email protected] Neverfeellikeyouarealone!Therearesomanypeople andresourcesatCarletonthatyoucantalkto,andthat canhelpyou.☺ Nonacademic InResidenceCounselingAppointments: 613-520-2600ext.8061 InClinicCounselingAppointments: 613-520-6674 InternationalStudentCounseling: 613-520-2600ext.6521 MentalHealthandWellnessPeerProgram: 613-520-2600ext.6544 DISCLAIMER:PASSworksheetsaredesignedasastudyaidforuseinPASSworkshopsonly.Worksheetsmay containerrors,intentionalorotherwise.Itisuptothestudentstoverifytheinformationcontainedwithin.
© Copyright 2026 Paperzz