For the reaction4HCI(g) + O2(g)-→2H2O(g) + 2C1½(g)AH° = -114.4 kJ and AS° = -128.9 J/KThe standard free energy change for the reaction of 1.62 moles of HCl(g) at 332 K, 1 atm would bekJ.This reaction is (reactant, product)favored under standard conditions at 332 K.Assume that AH° and AS° are independent of temperature.

Thermodynamic is the branch of chemistry that mainly deals with the heat transfer between system and…

Answered: For the reaction 4HCI(g) + O2(g)-…

Chemistry

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Author:Steven S. Zumdahl

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Chapter17: Spontaneity, Entropy, And Free Energy

Section: Chapter Questions

Problem 70E: Hydrogen sulfide can be removed from natural gas by the reaction 2H2S(g)+SO2(g)3S(s)+2H2O(g)...

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Use the standard free energy data in Appendix G to determine the free energy change for each of the following reactions, which are run under standard state conditions and 25 C. Identify each as either spontaneous or nonspontaneous at these conditions. (a) C(s,graphite)+O2(g)CO2(g) (b) O2(g)+N2(g)2NO(g) (c) 2Cu(s)+S(g)Cu2S(s) (d) CaO(s)+H2O(l)Ca(OH)2(s) (e) Fe2O3(g)+3CO(g)2Fe(s)+3CO2(g) (f) CaSO42H2O(s)CaSO4(s)+2H2O(g)
One of the reactions that destroys ozone in the upper atmosphere is NO(g)+O3(g)NO2(g)+O2(g) Using data from Appendix 4, calculate G and K (at 298 K) for this reaction.
Calculate G at 415 K for each of the reactions in Question 18. State whether the reactions are spontaneous.
At 298 K, G = 70.52 kJ for the reaction 2NO(g) + O2(g) 2NO2(g) (a) Calculate _G at the same temperature when PNO = 1.0 104 atm, PO2=2.0103 atm, and PNO2=0.30 atm. (b) Under the conditions in part a, in which direction is the reaction spontaneous?
Is the following reaction spontaneous as written? Explain. Do whatever calculation is needed to answer the question. SO2(g)+H2(g)H2S(g)+O2(g)
Thermite reactions have been used for welding metal parts such as railway rails and in metal refining. One such thermite reaction is Fe2O3(s)+2Al(s)Al2O3(s)+2Fe(s). Is the reaction spontaneous at room temperature under standard conditions? During the reaction, the surroundings absorb 851.8 kJ/mol of heat.
On the basis of your experience, predict which reactions are spontaneous: (a) PbO2(s)Pb(s)+O2(g)(b) N2(l)N2(g) at 25C (c) C6H12O6(s)C6H12O6(l) at 25C (d) Ca2+(aq)+CO32(aq)CaCO3(s)
Many plastic materials are organic polymers that contain carbon and hydrogen. The oxidation of these plastics in air to farm carbon dioxide and water is a spontaneous process; however, plastic materials tend to persist in the environment. Explain.
For the reaction NO(g)+NO2(g)N2O3(g) , use tabulated thermodynamic data to calculate H and S. Then use those values to answer the following questions. (a) Is this reaction spontaneous at 25°C? Explain your answer. (b) If the reaction is not spontaneous at 25°C, will it become spontaneous at higher temperatures or lower temperatures? (c) To show that your prediction is accurate, choose a temperature that corresponds to your prediction in part (b) and calculate G . (Assume that both enthalpy and entropy are independent of temperature.)
Calculate G at 355 K for each of the reactions in Question 17. State whether the reactions are spontaneous.
What is the standard free energy change, G, for a reaction? What is the standard free energy of formation, Gf for a substance? How are Gf values used to calculate Grxn? How can you use Hesss law to calculate Grxn? How can you use H and S values to calculate Grxn? Of the functions H, S, and G, which depends most strongly on temperature? When G is calculated at temperatures other than 25Cwhat assumptions are generally made concerning H and S?
Hydrogen sulfide can be removed from natural gas by the reaction 2H2S(g)+SO2(g)3S(s)+2H2O(g) Calculate G and K (at 298 K) for this reaction. Would this reaction be favored at a high or low temperature?

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