Given the following data, answer the following questions: Fe2+(aq) + 2e- → Fe(s) E○red = -0.44 v, Cr3+(aq) + e- → Cr2+(aq) E○red = -0.407 v (a) What is the spontaneous cell reaction when a voltaic cell is constructed using these two half- reactions? (b) What is the E○ for the reaction? (c) What is equilibrium constant and deltaG?

Chemistry & Chemical Reactivity
10th Edition
ISBN:9781337399074
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Chapter19: Principles Of Chemical Reactivity: Electron Transfer Reactions
Section19.5: Electrochemical Cells Under Nonstandard Conditions
Problem 19.7CYU: The half-cells Ag+(aq. 1.0 M)|Ag(s) and H+(aq, ? M)|H2(1.0 bar) are linked by a salt bridge to...
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Given the following data, answer the following questions:

Fe2+(aq) + 2e- → Fe(s) E○red = -0.44 v, Cr3+(aq) + e- → Cr2+(aq) E○red = -0.407 v

(a) What is the spontaneous cell reaction when a voltaic cell is constructed using these two half- reactions?

(b) What is the E○ for the reaction?
(c) What is equilibrium constant and deltaG?
(d) If the concentration of Cr3+ and Cr2+ are each 0.10 M and the cell potential is 0.100 v, what is the concentration of Fe2+?
(e) What is E for the reaction at equilibrium?

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