Standard reduction potentials for Iron() and copper() The standard reduction potential for a substance indicates how readily that substance gains electrons relative to other substances at standard conditions. The more positive the reduction potential, the more easily the substance gains electrons. Consider the following: Fe (aq)+2eFe(s), Cu" (aq) + 2eCu(s), Ered =-0.450 V E red =+0.337 V Part B What is the standard potential, E cn, for this galvanic cell? Use the given standard reduction potentials in your calculation as appropriate. Express your anewer to three decimal places and include the appropriate units. > View Available Hint(s) E Value Units Submit Next> Provide Feedback

Standard reduction potentials for Iron() and copper() The standard reduction potential for a substance indicates how readily that substance gains electrons relative to other substances at standard conditions. The more positive the reduction potential, the more easily the substance gains electrons. Consider the following: Fe (aq)+2eFe(s), Cu" (aq) + 2eCu(s), Ered =-0.450 V E red =+0.337 V Part B What is the standard potential, E cn, for this galvanic cell? Use the given standard reduction potentials in your calculation as appropriate. Express your anewer to three decimal places and include the appropriate units. > View Available Hint(s) E Value Units Submit Next> Provide Feedback

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...

See similar textbooks

Similar questions

Use the standard reduction potentials given below to predict if a reaction will occur when Al metal is put into a 1 M Fe²+ solution. aqueous Fe2+ (aq) + 2e → Fe(s) E red Al³+ (aq) + 3e →→ Al(s) E + red = If a reaction will occur, write a balanced net ionic equation for the reaction. If no reaction will occur, leave all boxes blank. ― -0.440 V -1.660 V (Use the lowest possible coefficients. Be sure to specify states such as (aq) or (s). If a box is not needed, leave it blank.) +
7. Please answer the following questions. (a) Given the following reduction potentials Cd (OH)2 (s) + 2e → Cd (s) + 2 OH (aq) Eºred = -0.76 V NIO(OH) (s) + H₂O (1) + e → Ni(OH)2 (aq) + OH (aq) Eºred = +0.49 V Calculate the standard emf of the nickel-cadmium (nicad) rechargeable battery. *hint: the reaction for the discharge of nicad battery is: Cd (s) + 2 NIO(OH) (s) + 2 H₂O (1)→ 2Ni(OH)2 (aq) + Cd(OH)2 (s) (b) A typical nicad voltaic cell generates an emf of +1.30 V. Why is there a difference between this value and the one you calculated in part (b)? (c) Calculate the equilibrium constant for the overall nicad reaction based on this typical emf value.
Using standard reduction potentials from the ALEKS Data tab, calculate the standard reaction free energy AG for the following redox reaction. Be sure your answer has the correct number of significant digits. 2+ 3+ Mn²+ (aq) + 2H₂O (1) +2Fe³+ (aq) → MnO₂ (s) + 4H* (aq) +2Fe²+ (aq) kJ x10 [:] OL A பா
Using standard reduction potentials from the ALEKS Data tab, calculate the standard reaction free energy AGO for the following redox reaction. Be sure your answer has the correct number of significant digits. 2 MnO₂ (s) + 80H(aq) + 3Cl₂ (g) → 2 MnO4 (aq) + 4H₂O(1) +6Cl¯¯ (aq) 2 kJ x10 X S ? olo Ar
Using standard reduction potentials from the ALEKS Data tab, calculate the standard reaction free energy Be sure your answer has the correct number of significant digits. 3+ 4Fe²+ (aq) + O₂(g) + 4H* (aq) → 4Fe³+ (aq) + 2H₂O (1) KJ x10 X Ś AGO for the following redox reaction.
Use the standard reduction potentials located in the 'Tables' linked above to calculate the standard free energy change in kJ for the reaction: Cd2+ (aq) + Zn(s)→→→→→→ Cd(s) + Zn²+ (aq) Answer: kJ K for this reaction would be than one.
A certain metal M forms a soluble nitrate salt MNO3. Suppose the left half cell of a galvanic cell apparatus is filled with a 15.0 mM solution of MNO3 and the right half cell with a 3.00 M solution of the same substance. Electrodes made of M are dipped into both solutions and a voltmeter is connected between them. The temperature of the apparatus is held constant at 30.0 °C. Which electrode will be positive? What voltage will the voltmeter show? Assume its positive lead is connected to the positive electrode. Be sure your answer has a unit symbol, if necessary, and round it to 2 significant digits. O left 0 right x10 X
Use the standard reduction potentials located in the "Tables' linked above to calculate the standard free energy change in kJ for the reaction: 3Hg"(aq) + 2Cr(s)3Hg(1) + 2Cr*(aq) Answer: |kJ K for this reaction would be than one.
Standard Reduction Potentials (Volts) at 25 °C F2 (g) + 2 e- 2 F- (aq) 2.870 O2(g) + 4 H3O+(aq) + 4 e- 6 H2O(l) 1.229 2 H2O(l) + 2 e- H2(g) + 2 OH-(aq) -0.828 Fe2+ (aq) + 2 e- Fe (s) -0.440 A 0.122 M neutral aqueous FeF2 solution is electrolyzed under 1 atm pressure using platinum electrodes.(a) Write the half-reactions expected to occur, taking into account the effect of the non-standard conditions on the electrode potentials.Half-reaction at anode: + + -> + + Half-reaction at cathode: + + -> + + (b) What is the expected decomposition potential? _______ V
Consider the following standard reduction potentials: Zn2*(aq) + 2 e → Zn(s) E° = -0.76 V Mg2*(aq) + 2 e → Mg(s) E° = -2.37 V Ag*(aq) + e → Ag(s) E° = +0.80 V Which is the strongest oxidizing agent? Mg2*(aq) Zn2*(aq) Ag*(aq) 5:08 PM 90°F Partly sunny P Type here to search 8/6/2021
Use standard reduction potentials to calculate the standard free energy change in kJ for the reaction: 2H+ (aq) + Hg(1)→ H₂(g) + Hg²+ (aq) 2H+ (aq) + 2e¯ → H₂(g) Fº red 2+ Hg2 (aq) + 2e¯ → Hg(1) AGO = || kJ K for this reaction would be Eº red = 0.000 V = = 0.855 V than one.
A galvanic cell at a temperature of 25.0 °C is powered by the following redox reaction: 2Cr³+ (aq) + 3 Ca(s) → 2Cr(s) + 3Ca²+ (aq) Suppose the cell is prepared with 6.35 M Cr3+ in one half-cell and 0.492 M Ca²+ in the other half. Calculate the cell voltage under these conditions. Ered red= -0.744 V Cr³+ (aq) + 3e → Cr(s) Ca²+ (aq) + 2e → Ca(s) Ered= -2.868 V The standard cell potential (E°) for this galvanic cell is [Select] There are [Select] galvanic cell. Under these conditions, the reaction quotient is [Select] volatage is [Select] moles of electrons transferred during to operate this VV. In order to increase the cell voltage for this cell, [Select] V. ✓and the cell >