CHEM 102 1nd Edition Lecture 8Outline of Last Lecture I. ExampleII. Gibbs Free Energy, GIII. Delta G reaction indicates spontaneity IV. Gibbs Helmhots equationOutline of Current Lecture V. Gibbs free energy change for a reactionVI. Reaction A  B VII. How to create a spontaneous reactionVIII. Chemical kineticsCurrent Lecture- Gibbs free energy change for a reactiono Delta G reaction = delta H – T(delta S) When you sue data from tables, T=298.15K (25 degrees C) You are figuring out if reaction is spontaneous at 25 degrees C Delta G reaction < 0  spontaneous Delta G reaction > 0  non spontaneous for forward reaction- Reverse reaction is spontaneous Delta G = 0  equilibrium- Reaction A  B o Delta G < 0: reaction will proceed to produce products, more B is made until equilibrium is reachedo Delta G > 0: reaction proceeds forward reactants, more A is made until equilibrium isreachedo Detla G = 0: you are at equilibrium, A is converting to B just as fast as B is converting to A A  B- How to create a spontaneous reactiono –Delta G, -delta H, +T(delta S) Reaction spontaneous at T, exothermic, more disordero –Delta G, -delta H, T(delta S) Reaction spontaneous at low T, exothermic, less disorderThese notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.o –Delta G, +delta H, +T(delta S) Reaction spontaneous at high T, endothermic, more disordero +Delta G, +delta H, -T(delta S) Delta G will ALWAYS be positive (forward reaction will be non spontaneous at all G), endothermic, less disorder- Chemical kineticso Thermodynamics is used to predict if reaction will proceed in forward reaction o Cannot tell you how fast the reaction will go o Study of rates of chemical reactions (determining how fast reactions and mechanisms as which they happen)o Mechanism: the order in which bonds are formed and broken as reaction proceeds o Rate: change in concentration of a product on reactant per unit time Always positive  Reactant over time decreases while the product increases in amount of