Question 14 of 20<>A + B CB+659.7+402.0AGxn =kJIf AHan and A.Sn are both negative values, what drives the spontaneous reaction and in what direction at standard conditions?The spontaneous reaction isO entropy-driven to the left.O enthalpy-driven to the left.O enthalpy-driven to the right.O entropy-driven to the right.Question Source: McQuarrie, Rock, And Gallogly 4e - General Chemistry | Publisher: University ScieShowa Chapter 34-Part 1.pptxa. Chapter 34-Part 2.pptxa Chapter 34-Part 2.pptxO The Social Dilem..docxO The Social Dilem..docx11:5/8

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A +B C B +659.7 +402.0 AGxn = kJ If AHan and ASan are both negative values, what drives the spontaneous reaction and in what direction at standard conditions? The spontaneous reaction is O entropy-driven to the left. O enthalpy-driven to the left. O enthalpy-driven to right. O entropy-driven to the right. Question Source: McQuarrie, Rock, And Gallogly 4e - General Chemistry| Publisher: University Scie Show a Chapter 34-Part 2.pptx a Chapter 34-Part 2.pptx O The Social Dilem.docx Chapter 34-Part 1.pptx O The Social Dilem..doCx 115 5/8

A +B C B +659.7 +402.0 AGxn = kJ If AHan and ASan are both negative values, what drives the spontaneous reaction and in what direction at standard conditions? The spontaneous reaction is O entropy-driven to the left. O enthalpy-driven to the left. O enthalpy-driven to right. O entropy-driven to the right. Question Source: McQuarrie, Rock, And Gallogly 4e - General Chemistry| Publisher: University Scie Show a Chapter 34-Part 2.pptx a Chapter 34-Part 2.pptx O The Social Dilem.docx Chapter 34-Part 1.pptx O The Social Dilem..doCx 115 5/8

Chemistry

9th Edition

ISBN:9781133611097

Author:Steven S. Zumdahl

Publisher:Steven S. Zumdahl

Chapter17: Spontaneity, Entropy, And Free Energy

Section: Chapter Questions

Problem 7RQ: If you calculate a value for G for a reaction using the values of Gf in Appendix 4 and get a...

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What types of experiments can be carried out to determine whether a reaction is spontaneous? Does spontaneity have any relationship to the final equilibrium position of a reaction? Explain.
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If you calculate a value for G for a reaction using the values of Gf in Appendix 4 and get a negative number, is it correct to say that the reaction is always spontaneous? Why or why not? Free energy changes also depend on concentration. For gases, how is G related to the pressure of the gas? What are standard pressures for gases and standard concentrations for solutes? How do you calculate G for a reaction at nonstandard conditions? The equation to determine G at nonstandard conditions has Q in it: What is Q? A reaction is spontaneous as long as G is negative; that is, reactions always proceed as long as the products have a lower free energy than the reactants. What is so special about equilibrium? Why dont reactions move away from equilibrium?
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Table 17-1 lists common half-reactions along with the standard reduction potential associated with each half-reaction. These standard reduction potentials are all relative to some standard. What is the standard (zero point)? lf is positive for a half-reaction, what does it mean? If is negative for a half-reaction, what does it mean? Which species in Table 17-1 is most easily reduced? Least easily reduced? The reverse of the half-reactions in Table 17-1 are the oxidation half-reactions. How are standard oxidation potentials determined? In Table 17-1, which species is the best reducing agent? The worst reducing agent? To determine the standard cell potential for a redox reaction, the standard reduction potential is added to the standard oxidation potential. What must be true about this sum if the cell is to be spontaneous (produce a galvanic cell)? Standard reduction and oxidation potentials are intensive. What does this mean? Summarize how line notation is used to describe galvanic cells.