20. Electrochemistry

Which of the following is NOT true of standard reduction potential?

Given the standard electrode reduction potentials: Zn^{2+} + 2e^- ightarrow Zn ext{ } E^ext{0} = -0.76 ext{ V} and Cu^{2+} + 2e^- ightarrow Cu ext{ } E^ext{0} = +0.34 ext{ V}, which metal will be oxidized when a zinc electrode and a copper electrode are connected in a voltaic cell?

Which of the following statements correctly compares the standard reduction potentials (at 25°C) of Cu^{2+}/Cu and Cd^{2+}/Cd?

Determine the total number of electrons transferred in the following balanced reaction.

4 MnO₄^– (aq) + 12 H₃O⁺ (aq) → 4 Mn²⁺ (aq) + 5 O₂ (g) + 18 H₂O (g)

Identify the species that is being oxidized in the following balanced reaction.

3 Pb²+ (aq) + 2 Cr (s) → 3 Pb (s) + 2 Cr³⁺ (aq)

Given the following standard reduction potentials:A^{2+} + 2e^- → A(s)E^ext{°} = -0.50ext{ V}B^{+} + e^- → B(s)E^ext{°} = +0.20ext{ V}Which species is the stronger oxidizing agent under standard conditions?

Use the standard half-cell potentials listed below to calculate the standard cell potential for the following reaction occurring in an electrochemical cell at 25°C. (The equation is balanced.)Pb(s) + Br2(l) → Pb2+(aq) + 2 Br-(aq)Given the standard reduction potentials:Pb2+(aq) + 2 e- → Pb(s) E° = -0.13 VBr2(l) + 2 e- → 2 Br-(aq) E° = +1.07 VWhat is the standard cell potential (E°cell) for the reaction?

What is the value (in V) of E°cell for the following reaction? Zn2+ (aq) + Pb (s) ⇌ Zn (s) + Pb2+ (aq)

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?

What is the value (in V) of E°cell for the following reaction? Cu²⁺ (aq) + Sn (s) → Cu (s) + Sn²⁺ (aq)

Which of the following represents the balanced equation for the overall redox reaction between Fe³⁺(aq) and Cr(s) based on their standard reduction potentials?

What is the value (in V) of E°cell for the reaction Cu²⁺ (aq) + Fe (s) → Cu (s) + Fe²⁺ (aq) given the standard reduction potentials: Cu²⁺/Cu = +0.34 V and Fe²⁺/Fe = -0.44 V?

What is the coefficient of NO when the following redox reaction is balanced in acidic solution?

NO₃‾ (aq) + Cu (s) → NO (s) + Cu²⁺ (aq)