Half-Reaction Standard Reduction Potential, E (V) Ag* (aq) +e- -→ Ag(s) +0.80 Cu?+ (aq) + 2 e- → Cu(s) +0.34 Pb²+(ag) + 2 e- → Pb(s) -0.13 A+ (ag) + 3 e- → Al(s) -1,66 A standard galvanic cell is made using Pb-Pb(NO,), and Cu-Cu(NO,), half-cells. Which of the following modifications to the cell will cause the greatest increase in E" cell, and why? Assume all solutions are1 M. cell = +0.67 V A Replacing the Cu-Cu(NO,), half-cell with a Ag-AGNO, half-cell, because the reduction of 1 mol of Agt requires only 1 mol of e, resulting in E'. B Replacing the Cu-Cu(NO,), half-cell with a Ag-AGNO, half-cell, because less current flows through the cell, resulting in E = +0.93 V. Replacing the Pb-Pb(NO,), half-cell with an Al-Al(NO,), half-cell, because the oxidation of A1(s) is more thermodynamically favorable than the oxidation of Pb(s), resulting in E cell = +2.00 V. D Replacing the Pb-Pb(NO,), half-cell with an Al-Al(NO,), half-cell, because 6 mol of e flow through the cell, resulting in Ei= +5.66 V.

Half-Reaction Standard Reduction Potential, E (V) Ag* (aq) +e- -→ Ag(s) +0.80 Cu?+ (aq) + 2 e- → Cu(s) +0.34 Pb²+(ag) + 2 e- → Pb(s) -0.13 A+ (ag) + 3 e- → Al(s) -1,66 A standard galvanic cell is made using Pb-Pb(NO,), and Cu-Cu(NO,), half-cells. Which of the following modifications to the cell will cause the greatest increase in E" cell, and why? Assume all solutions are1 M. cell = +0.67 V A Replacing the Cu-Cu(NO,), half-cell with a Ag-AGNO, half-cell, because the reduction of 1 mol of Agt requires only 1 mol of e, resulting in E'. B Replacing the Cu-Cu(NO,), half-cell with a Ag-AGNO, half-cell, because less current flows through the cell, resulting in E = +0.93 V. Replacing the Pb-Pb(NO,), half-cell with an Al-Al(NO,), half-cell, because the oxidation of A1(s) is more thermodynamically favorable than the oxidation of Pb(s), resulting in E cell = +2.00 V. D Replacing the Pb-Pb(NO,), half-cell with an Al-Al(NO,), half-cell, because 6 mol of e flow through the cell, resulting in Ei= +5.66 V.

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

Alkaline dry-cell batteries have a voltage of 1.50 V under standard conditions. Given this standard reduction potential: ZnO(s) + H2O(l) + 2 e- → Zn(s) + 2 OH- Eo = -1.26 V What is the standard reduction potential, in volts, for this half-reaction: 2 MnO2(s) + H2O(l) + 2 e- → Mn2O3(s) + OH- Eo = ? Type in your answer as a number to two decimal places with no units.
A galvanic cell based on the reaction between Br2 and vanadium (III) ion has E°cell= 1.39 V: Br2(1) + 2 V3*(aq) + 2 H20(1) → 2 VO²*(aq) + 4 H*(aq) + 2 Br (aq) What is the standard electrode potential for the reduction of VO²+ to V³+?
An electrochemical cell is constructed based on the following balanced equation: Cu(s) + 2 Ag*(aq) → Cu2*(aq) + 2 Ag(s) Half-reactions with standard reduction potentials are given below. Cu2*(aq) + 2 e¯ → Cu(s); E = 0.342 V Ag*(aq) + e¯→ Ag(s); E° = 0.800 V
A galvanic cell is composed of these two half-cells, with the standard reduction potentials shown: Co2+ (aq) + 2e → Co(s) Eº=-0.29 volt - Cd2+ (aq) +2e →→ Cd(s) E°= -0.42 volt The actual concentrations are: [Co2+ (aq)] = 0.0006 M, [Cd2+] = 0.149 M. What is the potential in volt of this galvanic cell? (T-298K) Report your answer with 3 places past the decimal point. Do not put unit in your answer.
An galvanic cell is constructed based on the following unbalanced net ionic equation.A2+(aq) + X(s) → A(s) + X3+(aq)The standard reduction potentials are as follows: A2+ + 2e− → A 1.52 V X3+ + 3e− → X -2.31 V Use this information to answer the following questions.How many electrons are being transferred in this reaction? 2 1 3 5 8 12 6 What substance is being oxidized in this reaction? X X3+ A2+ A What substance is being reduced in this reaction? A A2+ X3+ X Which of these best describes the flow of electrons in the cell's external circuit? electrons flow towards A and away from X electrons flow away from both A and X electrons flow towards both A and X electrons flow towards X and away from A
Calculate the cell potential for the reaction as written at 25.00 °C, given that [Zn2+]=0.753 M and [Ni2+]=0.0150 M. Use the standard reduction potentials in this table. Ni2+(aq) + 2e– → Ni(s)= -0.26 Zn2+(aq) + 2e– → Zn(s)= -0.76 Zn(s)+Ni2+(aq)↽−−⇀ Zn2+(aq)+Ni(s)
Consider the following electrochemical cell in which X is an unknown metal: Pt (s) | Cl–(1 M) | Cl2 (1 atm) || X2+(1 M) | X (s)If the standard cell emf is 0.23 V, what is the standard reduction potential at 25○C for X2++ 2 e– → X (s)
A galvanic cell is represented by the shorthand Cu | Cu²⁺ || Ag⁺ | Ag. Which reaction occurs at the anode? A) Cu(s) → Cu²⁺(aq) + 2e⁻ B) Ag⁺(aq) + e⁻ → Ag(s) C) Cu²⁺(aq) + 2e⁻ → Cu(s) D) Ag(s) → Ag⁺(aq) + e⁻
|| Using the Nernst equation to calculate nonstandard cell voltage A galvanic cell at a temperature of 25.0 °C is powered by the following redox reaction: 0 2+ 2+ Cu (aq) + Zn (s) → Cu (s) + Zn²+ (aq) 2+ 2+ Suppose the cell is prepared with 1.39 M Cu in one half-cell and 2.14 M Zn in the other. Calculate the cell voltage under these conditions. Round your answer to 3 significant digits. 0 x10 ロ・ロ X μ
Using standard reduction potentials from the ALEKS Data tab, calculate the standard reaction free energy AG for the following redox reaction. Round your answer to 3 significant digits. 2Cr(OH), (s)+ 10OH (aq)+3Cl, (g) → 2Cro (aq)+ 8H,0 (1)+ 6CI¯ (aq) kJ ?
›Calculate the cell potential for the reaction as written at 25.00 °C, given that [Zn²+] = 0.867 M and [Fe²+] = 0.0100 M. Use the standard reduction potentials in this table. Zn(s) + Fe²+(aq) ⇒ Zn²¹(aq) + Fe(s) E = V
Consider the following standard reduction potentials: Al3+(aq) + e- → Al(s) E° = -1.66 V Sn2+(aq) + 2e- → Sn(s) E° = -0.14 V Cl2(g) + 2e- → 2Cl-(aq) E° = 1.36 V Which species is the best oxidizing agent