Calculate the standard free energy for the reaction at 405.0°C. (you may use any valid technique - there may be more than one way to do a question like this): Al;O36) + 3 Haig) - 2 Al + 3 H;Og) given: AH", (kJ/mol) AS", (I/K-mol) AGʻ, (kJ/mol) Ala 28.3 AlOa -1678.0 50.7 -1588.0 205.152 Haigi 130.68 HO -285.83 69.95 -237.1 -241.83 188.835 -228.72 Answer:

Chemistry Small amounts of Fe(CO)5(l) usually form in steel tanks containing pressurized CO(g). You worked out the thermodynamics of this in question 1b. At what temperature (oC) will the formation of Fe(CO)4 become non-spontaneous? Show your work. b) A similar reaction occurs to make Ni(CO)4(l) with Gorxn = −38 kJ/mol, Horxn = −230 kJ/mol, and Sorxn = −480 J/Kmol. High pressure reactors use a thin disk of metal as a safety mechanism that will rupture and release gasses if the pressure in the reactor gets too high. If one was using CO gas, which disk (Fe or Ni) would be more likely to prematurely fail due to the metal being dissolved away by CO? Briefly explain why.

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Consider the reaction shown to answer the following question. 2CO (g) + 2H2 (g) → CO2 (g) + CH4 (g) AH° = - and AS° = - Which statement below is true? O This reaction is spontaneous at relatively higher temperatures and non-spontaneous at lower temperatures. O There is not enough information to make an assessment. O This reaction is spontaneous at relatively lower temperatures and non-spontaneous at higher temperatures. O This reaction is spontaneous at all temperatures. O This reaction is non-spontaneous at all temperatures.