Galvanic Cells
Chemistry ⇒ Redox Reactions and Electrochemistry
Galvanic Cells starts at 11 and continues till grade 12.
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Describe the role of the external circuit in a Galvanic cell.
Describe what happens to the mass of the anode and cathode during the operation of a typical Galvanic cell.
Explain why a Galvanic cell stops working after some time.
Explain why the salt bridge is necessary 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 oxidized?
Calculate the number of moles of electrons transferred in the following cell reaction: 2Ag⁺(aq) + Cu(s) → 2Ag(s) + Cu²⁺(aq).
If the concentration of Zn²⁺ ions in a Zn-Cu Galvanic cell is increased, what happens to the cell potential? (1) Increases (2) Decreases (3) Remains the same (4) Becomes zero
If the standard reduction potentials are: E°(Cu²⁺/Cu) = +0.34 V and E°(Zn²⁺/Zn) = -0.76 V, what is the standard cell potential for a Zn-Cu Galvanic cell?
If the cell potential of a Galvanic cell is negative, the cell reaction is ________. (1) Spontaneous (2) Non-spontaneous (3) At equilibrium (4) Impossible to determine
If the concentration of Zn²⁺ ions in a Zn-Cu Galvanic cell is increased, what happens to the cell potential? (1) Increases (2) Decreases (3) Remains the same (4) Becomes zero
The overall cell reaction in a Galvanic cell is always ________. (1) Spontaneous (2) Non-spontaneous (3) At equilibrium (4) Endothermic
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 pH (4) A device that separates isotopes
In a Galvanic cell, the anode is the electrode where ________ occurs.
In a Galvanic cell, the electrode at which oxidation occurs is called the ________.
In a Galvanic cell, the electrode at which reduction occurs is called the ________.
In a Galvanic cell, the electrode with the lower reduction potential acts as the ________.
The cell notation for a Galvanic cell is written as: Anode | Anode solution || Cathode solution | Cathode. True or False?
The cell potential of a Galvanic cell is positive under standard conditions. True or False?
The standard cell potential (E°cell) for a Galvanic cell is calculated by the equation: E°cell = E°cathode - E°anode. True or False?
True or False: In a Galvanic cell, electrons flow from the cathode to the anode through the external circuit.
