(a) Choose all of the statements from below which correctly describe issues pertaining to the relationship between the emf of a reaction and its Gibbs free energy change.The Gibbs free energy change and emf values of a reaction have opposite algebraic signs (+ vs. -).A spontaneous reaction has a negative Gibbs free energy change and a positive emf.A spontaneous reaction has a positive Gibbs free energy change and a negative emf.O Electron stoichiometry must be used to interconvert a Gibbs free energy change and a reaction emf.O A Gibbs free energy change involves coulombs of substances whereas an emf involves moles of electrons. Calculate the standard Gibbs free energy changes at 25 °C for each of the reactions shown below using the Eº values given. Select whether each of these reactions is nonspontaneous, at equilibrium, or spontaneous under standard conditions.(a) 1 Mn²+ (aq) + 1 Ca(s) = 1 Mn(s) + 1 Ca²+ (aq) E° = 1.690 VO nonspontaneousO at equilibriumO spontaneousAG° =(b) 2 Li+ (aq) + 2 F (aq) = 2 Li(s) + 1 F₂(g) E° = -5.920 V AG° =O nonspontaneousO at equilibriumO spontaneous(c) 1 Fe²+ (aq) + 1 Hg(1) ⇒ 1 Fe(s) + 1 Hg²+ (aq) E° = -1.294 V AG° =O nonspontaneousO at equilibriumO spontaneous(d) 1 Cr³+ (aq) + 1 Ce³+ (aq) = 1 Cr²+ (aq) + 1 Ce4+ (aq)O nonspontaneousO at equilibriumO spontaneousE° -2.020 V AG⁰ =kJ/molkJ/molkJ/molkJ/mol

Answered: Image /qna-images/answer/d33d11ea-762d-463d-93e3-adcfc5dbaa42.jpg

Calculate the standard Gibbs free energy changes at 25 °C for each of the reactions shown below using the E° values given. Select whether each of these reactions is nonspontaneous, at equilibrium, or spontaneous under standard conditions. (a) 1 Mn²+ (aq) + 1 Ca(s) = 1 Mn(s) + 1 Ca²+ (aq) E° = 1.690 V O nonspontaneous O at equilibrium O spontaneous (b) 2 Li+ (aq) + 2 F'(aq) = 2 Li(s) + 1 F₂(0) E° = -5.920 V O nonspontaneous O at equilibrium O spontaneous AGº- AG- (c) 1 Fe²+ (aq) + 1 Hg(1) = 1 Fe(s) + 1 Hg²+ (aq) E° = -1.294 V AG- O nonspontaneous O at equilibrium O spontaneous (d) 1 Cr³+ (aq) + 1 Ce³+ (aq) = 1 Cr²+ (aq) + 1 Ce++ (aq) Eº = -2.020 V AG° = O nonspontaneous O at equilibrium O spontaneous kJ/mol kJ/mol kJ/mol kJ/mol

Calculate the standard Gibbs free energy changes at 25 °C for each of the reactions shown below using the E° values given. Select whether each of these reactions is nonspontaneous, at equilibrium, or spontaneous under standard conditions. (a) 1 Mn²+ (aq) + 1 Ca(s) = 1 Mn(s) + 1 Ca²+ (aq) E° = 1.690 V O nonspontaneous O at equilibrium O spontaneous (b) 2 Li+ (aq) + 2 F'(aq) = 2 Li(s) + 1 F₂(0) E° = -5.920 V O nonspontaneous O at equilibrium O spontaneous AGº- AG- (c) 1 Fe²+ (aq) + 1 Hg(1) = 1 Fe(s) + 1 Hg²+ (aq) E° = -1.294 V AG- O nonspontaneous O at equilibrium O spontaneous (d) 1 Cr³+ (aq) + 1 Ce³+ (aq) = 1 Cr²+ (aq) + 1 Ce++ (aq) Eº = -2.020 V AG° = O nonspontaneous O at equilibrium O spontaneous kJ/mol kJ/mol kJ/mol kJ/mol

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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