esLx Give Up?Y HintFor a gaseous reaction, standard conditions are 298 K and a partial pressure of 1 atm for all species.For the reactionN,(g) + 3 H, (g) =2 NH,(g)the standard change in Gibbs free energy is AG° =-32.8 kJ/mol. What is AG for this reaction at 298 K when the partial%3Dpressures are PN, = 0.100 atm, PH,= 0.300 atm, and PNH,= 0.650 atm?%3D%3DkJ/molAG =TOOLSx10about uscareersprivacy policyterms of, usecontact ushelp

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Answered: es Lx Give Up? Y Hint For a gaseous…

Chemistry: Principles and Reactions

8th Edition

ISBN:9781305079373

Author:William L. Masterton, Cecile N. Hurley

Publisher:William L. Masterton, Cecile N. Hurley

Chapter16: Spontaneity Of Reaction

Section: Chapter Questions

Problem 83QAP

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Suppose you have an exothermic reaction with H = 15 kJ and a S of +150 J/K. Calculate G and Keq at 10, 100, and 1000 K.
Consider the reaction NH4+(aq) H+(aq)+NH3(aq) Use G f for NH3(aq) at 25C=26.7 kJ/mol and the appropriate tables to calculate (a) G at 25C (b) Ka at 25C
Given that H f for HF(aq) is -320.1 kJ/mol and S for HF(aq) is 88.7 J/mol K, find Ka for HF at 25C.
For the process A(l) A(g), which direction is favored by changes in energy probability? Positional probability? Explain your answers. If you wanted to favor the process as written, would you raise or lower the temperature of the system? Explain.
Hydrogen bums in air with considerable heat transfer to the surroundings. Consider the decomposition of water togaseous hydrogen and oxygen. Without doing any calculations, and basing your prediction on the enthalpychange and the entropy change, is this reaction product-favored at 25 C? Explain your answer briefly.
Calculate the standard Gibbs free-energy change when SO3 forms from SO2 and O2 at 298 K. Why is sulfur trioxide an important substance to study? (Hint: What happens when it combines with water?)
of 16 For a gaseous reaction, standard conditions are 298 K and a partial pressure of 1 atm for all species. For the reaction N₂(g) + 3 H₂(g) = 2NH₂(g) the standard change in Gibbs free energy is AG° = -32.8 kJ/mol. What is AG for this reaction at 298 K when the partial pressures are PN₂ = 0.100 atm, PH₂ = 0.100 atm, and PNH, = 0.750 atm? AG = kJ/mol.
For the reaction A(aq) + B(aq) <---> C(aq) + D(aq), the equilibrium constant is 24.4 at 25oC and 35.7 at 50oC. What is the value of the standard Gibbs free energy change (in kJ) of this reaction at 75oC?
Gibbs free energy (G�) is a measure of the spontaneity of a chemical reaction. It is the chemical potential for a reaction, and is minimized at equilibrium. It is defined as G=H−TS�=�−�� where H� is enthalpy, T� is temperature, and S� is entropy. The chemical reaction that causes magnesium to corrode in air is given by 2Mg+O2→2MgO2Mg+O2→2MgO in which at 298 K, ΔH∘rxn = −1204 kJΔ�rxn∘ = −1204 kJ and ΔS∘rxn = −217.1 J/KΔ�rxn∘ = −217.1 J/K. Part A Part complete What is the standard Gibbs free energy for this reaction? Assume the commonly used standard reference temperature of 298 K. Part B What is the Gibbs free energy for this reaction at 5958 KK ? Assume that ΔHΔ� and ΔSΔ� do not change with temperature. Express your answer to two decimal places and include the appropriate units. Part C At what temperature Teq�eq do the forward and reverse corrosion reactions occur in equilibrium? Express your answer as an integer and include the appropriate units.
The standard Gibbs free energy change is 2.60 kJ/mol for the reaction at 25.0oC: H2(g) + I2(g) →← 2HI(g); ∆Gorxn = + 2.60 kJ/mol The reaction starts with equal molar amounts of H2(g) and I2(g) in a previously evacuated, constant volume vessel. What is the equilibrium mole fraction of HI? Enter your answers with correct units and significant figures.
What is the ΔrG for the following reaction (in kJ mol-1) at 298 K? 3 O2 (g) ⇌ 2 O3 (g) The conditions for this reaction are: PO2 = 1.75 bar PO3 = 1.99 bar You will also need to use Appendix II in your textbook (containing standard Gibbs energies of formation). A copy of Appendix II has also been posted on eClass. Please use the method of Gibbs energy of formation to calculate ΔrG° if needed. Enter the value of "Q" for this reaction.
(Q77) The standard Gibbs free energy (∆G°rxn) for the formation of sulfur trioxide from sulfur dioxide and oxygen gas is -72.3 kJ/mol. The balanced chemical equation is SO2 (g) + ½ O2 (g) --> SO3 (g). What will be the Gibbs Free energy of the reaction (in kJ/mol) if it takes place at a low temperature of -24.6 and the concentrations of three gases are: SO2 = 0.174 M O2 = 0.167 M SO3 = 1.32 M (One decimal place)

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