Some useful information (note: these equations will not be given on quizzes or exams) To calculate AHⓇ, AS, or AG" (sum

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Some Useful Information Note These Equations Will Not Be Given On Quizzes Or Exams To Calculate Ah As Or Ag Sum 1 (39.79 KiB) Viewed 27 times

Some useful information (note: these equations will not be given on quizzes or exams) To calculate AHⓇ, AS, or AG" (sum of products) - (sum of reactants) **Be sure to multiply by coeff in bal, eq. Typical units: AH=kJ; AS = J/K; AG = kJ; T = Kelvin (always!) AG=AH - TAS (watch units when using this equation!!) OK to assume AGTemp = AH 70-TAS 298 AG<0 (spontaneous); AG > 0 (not spontaneous), AG=0 (equilibrium) AG° = -RT In K Under standard states where K= equilibrium conditions, AG = AGⓇ + RT In Q Under any concentration conditions; not at equilibrium (T=Kelvin; R = 8,3145 J/K mol) Use the data in the back of your book for enthalpy, entropy, and free energy values if needed. 1. What are the conditions of standard state? 2. Calculate the change in enthalpy for the following reactions, and identify each process as exothermic or endothermic. Note: You have to predict the products. a. The autoionization of water. b. Hydrochloric acid being titrated by sodium hydroxide 3. + From these two reactions at 298 K VO(s) + 3C06) - 2V(s)+3CO2(g): AIT-369.8 kJ: AS98.3 J/K V:Os(s) + 2CO() - V.Ox(s) + 2C02(g): A7 ---234.2 kJ: AS - 0.2 / calculate AG" for the following at 298 K: 2V(8) + SCO(g) - V Os(s) + SCO()