Galvanic Cells
Chemistry ⇒ Redox Reactions and Electrochemistry
Galvanic Cells starts at 11 and continues till grade 12.
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A Galvanic cell is constructed using Fe and Ag electrodes. Given E°(Fe²⁺/Fe) = -0.44 V and E°(Ag⁺/Ag) = +0.80 V, which electrode is the cathode?
A Galvanic cell is constructed with the following half-cells: Ag⁺(aq) + e⁻ → Ag(s) E° = +0.80 V; Cu²⁺(aq) + 2e⁻ → Cu(s) E° = +0.34 V. Which metal is deposited at the cathode?
A student sets up a Galvanic cell with the following cell notation: Fe(s) | Fe²⁺(aq) || Cu²⁺(aq) | Cu(s). Which metal will be oxidized?
Describe the role of the salt bridge in preventing polarization in a Galvanic cell.
A Galvanic cell is constructed with the following half-cells: Ag⁺(aq) + e⁻ → Ag(s) E° = +0.80 V; Cu²⁺(aq) + 2e⁻ → Cu(s) E° = +0.34 V. Which metal is deposited at the cathode?
A Galvanic cell is constructed with the following half-cells: Pb²⁺(aq) + 2e⁻ → Pb(s) E° = -0.13 V; Ag⁺(aq) + e⁻ → Ag(s) E° = +0.80 V. Calculate the standard cell potential.
A student sets up a Galvanic cell with the following cell notation: Fe(s) | Fe²⁺(aq) || Cu²⁺(aq) | Cu(s). Which metal will be oxidized?
Calculate the number of electrons transferred in the overall reaction for a Galvanic cell with the following half-reactions: Zn(s) → Zn²⁺(aq) + 2e⁻ and Cu²⁺(aq) + 2e⁻ → Cu(s).
The standard cell potential (E°cell) for a Galvanic cell is always: (1) Positive (2) Negative (3) Zero (4) Variable
Which of the following best describes a Galvanic cell? (1) A device that converts chemical energy into electrical energy (2) A device that converts electrical energy into chemical energy (3) A device that measures temperature (4) A device that stores mechanical energy
Which of the following ions would be suitable for use in a salt bridge? (1) Na⁺ and Cl⁻ (2) Ag⁺ and Br⁻ (3) Fe²⁺ and SO₄²⁻ (4) Pb²⁺ and NO₃⁻
Which of the following is a correct representation of a half-cell reaction? (1) Zn(s) → Zn²⁺(aq) + 2e⁻ (2) Zn²⁺(aq) + 2e⁻ → Zn(s) (3) Both (1) and (2) (4) Neither (1) nor (2)
Fill in the blank: In a Galvanic cell, the _______ is the site of reduction.
Fill in the blank: The direction of electron flow in a Galvanic cell is from the _______ to the _______.
Fill in the blank: The standard electrode potential is measured under standard conditions, which include a temperature of _______ K.
In a Galvanic cell, the electrode where oxidation occurs is called the _______.
State whether the following statement is true or false: The cell potential of a Galvanic cell depends on the concentration of the solutions in the half-cells.
True or False: Electrons flow from the cathode to the anode in a Galvanic cell.
True or False: In a Galvanic cell, oxidation occurs at the anode and reduction occurs at the cathode.
True or False: The cell potential of a Galvanic cell can be calculated using the Nernst equation when non-standard conditions are used.
