3. The Ecell for agalvanic cell composed of a Li electrode and an unknown electrode was found to be 2.91 volts. Use the Standard Reduction Potential table to determine the identity of the unknown electrode. Show work. Half-Reaction Ag* (aq) + 1e Cu²+ (aq) + 2e Fe³+ (aq) + 3e Ag(s) Cu(s) Fe(s) Zn²+ (aq) + 2e Zn(s) Sn²+ (aq) + 2e Sn(s) Cd2+ (aq) + 2e Cd(s) Mg²+ (aq) + 2e → Mg(s) Ereg(Volts) -0.80 -0.34 -0.04 -0.76 -0.14 -0.40 -2.37

3. The Ecell for agalvanic cell composed of a Li electrode and an unknown electrode was found to be 2.91 volts. Use the Standard Reduction Potential table to determine the identity of the unknown electrode. Show work. Half-Reaction Ag* (aq) + 1e Cu²+ (aq) + 2e Fe³+ (aq) + 3e Ag(s) Cu(s) Fe(s) Zn²+ (aq) + 2e Zn(s) Sn²+ (aq) + 2e Sn(s) Cd2+ (aq) + 2e Cd(s) Mg²+ (aq) + 2e → Mg(s) Ereg(Volts) -0.80 -0.34 -0.04 -0.76 -0.14 -0.40 -2.37

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

The electrochemical cell Cu|Cu 2+||Al 3+|Al has a potential of –1.997 V under standard conditions. What is the standard reduction potential for the reaction of Al 3+ Al?
Mg(s) + Fe²+(aq) → Mg²+ (aq) + Fe(s) The galvanic cell described above has a standard cell potential of 1.93 V. The standard reduction potential of Mg2+ corresponding to the half-reaction Mg2+ (aq) + 2e- Mg(s) is -2.37 V. Calculate the standard reduction potential of iron(II). EFe²+ = V
Calculate the cell potential for the galvanic cell in which the given reaction occurs at 25 °C, given that [Sn] = 0.0595 M, [Co1 = 0.0452 M, [Sn+] = 0.00261 M, and [Co*] = 0.00954 M. Standard reduction potentials can be found in %3D %3D this table. Sn (aq) + 2 Co+(aq) Sn+(aq) +2 Co*(aq) V E =
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)
What is the standard cell potential for the voltaic (galvanic) cell using the following half-cell reactions with the indicated standard half-cell potentials: Be²⁺(aq) + 2e⁻→Be(s), E⁰ = -2.9V and Cl₂ + 2e⁻→2Cl⁻(aq), E⁰= +1.4 V A) -1.5 V B) +1.5 V C) -4.3 V D) 4.3 V
Calculate the cell potential for the galvanic cell in which the given reaction occurs at 25 °C, given that [Sn**] = 0.0666 M, [Fe*1 = 0.0301 M, [Sn*+] = 0.00345 M, and [Fe2+] = 0.01092 M. Standard reduction potentials can be found in this table. Sn²*(aq) + 2 Fe* (aq) = Sn*(aq) + 2 Fe²+*(aq) E = V
A galvanic cell at a temperature of 25.0 °C is powered by the following redox reaction: 3Cu (aq) + 2A1 (s) 3Cu (s)+2A1* (aq) 2+ 3+ Suppose the cell is prepared with 2.15 M Cu“ in one half-cell and 7.31 M Al" in the other. Calculate the cell voltage under these conditions. Round your answer to 3 significant digits. AL Rights
4. A galvanic cell consisting of a magnesium electrode and a standard hydrogen electrode is constructed. The cell generates a voltage, Ecell, of 2.099 V. The standard reduction potential for the two half-cell reactions are as follows: Mg²+ (aq) + 2e → Mg (s) 2H+ (aq) + 2e → H₂ (g) -2.38 V OV (i) Determine the standard cell potential, Eºcell. (ii) Assuming a Mg²+ (aq) concentration of 1 mol dm³ and a H₂ (g) pressure of 1 atm, calculate the theoretical pH of the cell. You may use concentrations/partial pressures in place of activities.
What is the overall reaction for the following cell line notation of a galvanic cell? Al(s)|AI3*(aq) || H*(aq) |H2(g)|Pt(s) 2H2(g) + Al3+*(aq) + Pt(s) → Al(s) + PtH4(s Al(s) + 3H*(aq) + Pt(s) → AI3+(aq) + PtH3(s) 3H2(g) + 2AI3*(aq) → 6H*(aq) + 2AI(s) 2AI(s) + 6H*(aq) → 2AI3+(aq) + 3H2(g 2A13+(aq) + 6H*(aq) → 3H2(g) + 2Al(s)
A galvanic cell at a temperature of 25.0 °C is powered by the following redox reaction: Cu?* (aq)+Zn (s) → Cu (s) +Zn²* (aq) Suppose the cell is prepared with 3.40 M Cu´" in one half-cell and 5.47 M Zn2+ in the other. Calculate the cell voltage under these conditions. Round your answer to 3 significant digits. x10
For the cell reaction, Zn(s) | Zn2+(aq, 1 M) || Cu²*(aq, 1 M) | Cu(s), the electrode potential of cathode and anode are 0.34 V and -0.76 V respectively, what is the cell potential? O 1.10 V O -0.42 V O -1.10 V O 0.42 V
3) The standard potential for the following galvanic cell is +0.90 V: 3 Cu2+ (aq) + 2 Ga(s) ⇒ 3 Cu(s) + 2 Ga³+ (aq) Given that the standard reduction potential for the Cu2+/Cu half-cell is +0.34 V, what is the standard reduction potential for the Ga3+/Ga half-cell?