 # Lesson 6 collision theory and arrhenius equation

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Lesson 6 – Collision Theory and Arrhenius EquationCollision Theory1.Both molecules must collide*2.Both must collide with enough energy*3.Both must collide in the correct 3D orientation*Increasing the temperature increases collision frequency and percentage of high energy collisionsArrhenius Equationk = Ae-Ea/RTT = k = rateEa= k = rateBootcamp.com52
Dr. Mike’s Gen Chem OutlineLesson 7 – Reaction MechanismsIntermediates– are produced in the middle of the reaction and get used up before the end.Rate law– rate = k × (concentration of each reactant in the slow step, multiplied by each other).Overall reaction– add up the elementary steps and cancel out intermediates.Lesson 8 - Quiz1.A certain chemical reaction has the following elementary steps:A + BB2(slow step)B2+ CD (fast step)A.What is the intermediate?B.What is the overall rate law?C.What is the overall reaction?2.Use the graph to determine the following:A.What are the elementary steps?B.What is/are the intermediates?C.What is the overall rate law?D.What is the overall reaction?Bootcamp.com53Dr. Mike’s Gen Chem OutlineLesson 8 Quiz1. B2; 2. Rate=k[A][B]; 3. A+B+C->D1. A+B->B+C(slow), B+C->D; 2. C; 3. Rate=k[A][B]; 4. A+B->DBootcamp.com54
Dr. Mike’s Gen Chem OutlineChapter 9: Chemical EquilibriaLesson 1 – Dynamic Equilibrium and Equilibrium ConstantsDynamic equilibrium:Forward Rate = Reverse RateEquilibrium ConstantOnly aqueous or gaseous are included in equilibrium expressionOnly a change in TEMPERATURE can change equilibrium constantkN2(g)+ 3H2(g)2NH3(g)1.What is the rate constant expression in terms of concentration, KC2.What is the rate constant expression in terms of pressure, KP2SO2+ O22SO3KC= 2.8 × 10Which side of the reaction is favored?Is the following mixture at equilibrium???3.If KC= 10, then what is KCfor the reverse reaction, 2NH3N2+ 3H2?Bootcamp.com55Dr. Mike’s Gen Chem OutlineLesson 2 – Reaction Quotient (Q vs. K)KeqMeaningK more than 1Products favored at eq.K less than 1Reactants favored at eq.QResultQ is less than KShift right (products)Q is greater than KShift left (reactants)Q = KAt equilibriumLesson 3 – Quiz2

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