Understanding Galvanic Cells

What is a galvanic cell?

• A galvanic cell is an electrochemical cell that only functions with non-spontaneous reactions.

• A galvanic cell is a type of battery that requires external power to operate.

• A galvanic cell is a device that stores electrical energy for later use.

• A galvanic cell is an electrochemical cell that generates electrical energy from spontaneous chemical reactions.

Describe the main components of a galvanic cell.

• Inductor coil

• Resistor network

• Anode, Cathode, Salt bridge, Electrolytes, External circuit

• Battery terminals

What is the function of the anode in a galvanic cell?

• The anode is the terminal that receives electrons from the external circuit.

• The anode serves as a barrier to prevent electron flow.

• The anode functions as the site of oxidation and is the source of electrons in a galvanic cell.

• The anode is where reduction occurs in a galvanic cell.

What is the role of the cathode in a galvanic cell?

• The cathode is the site of reduction in a galvanic cell.

• The cathode is where the electrolyte is stored in a galvanic cell.

• The cathode produces electrons in a galvanic cell.

• The cathode is the site of oxidation in a galvanic cell.

Explain the process of oxidation in a galvanic cell.

• Oxidation in a galvanic cell occurs at the anode, where a substance loses electrons and forms metal ions.

• Oxidation occurs at the cathode, where a substance gains electrons.

• Oxidation in a galvanic cell involves the reduction of metal ions to solid metal.

• Oxidation happens in the electrolyte solution, not at the electrodes.

What is the significance of the salt bridge in a galvanic cell?

• The salt bridge acts as a barrier to stop electron flow.

• The salt bridge is used to increase the temperature of the cell.

• The salt bridge prevents ion flow to maintain charge separation.

• The salt bridge allows ion flow to maintain charge balance and enables continuous electron flow in a galvanic cell.

How is electrical energy produced in a galvanic cell?

• Electrical energy is produced by the flow of protons from the cathode to the anode.

• Electrical energy is generated through the heating of the electrolyte solution.

• Electrical energy is created by the chemical reaction at the cathode only.

• Electrical energy is produced by the flow of electrons from the anode to the cathode in a spontaneous redox reaction.

What is the difference between a galvanic cell and an electrolytic cell?

• Galvanic cells are used in batteries; electrolytic cells are used in light bulbs.

• Galvanic cells generate electricity; electrolytic cells consume electricity.

• Galvanic cells are always larger than electrolytic cells.

• Galvanic cells require external power; electrolytic cells operate independently.

What are some common examples of galvanic cells?

• solar cell

• fuel cell

• Daniell cell, lead-acid battery, alkaline battery, nickel-cadmium battery.

• thermocouple

How does the Nernst equation relate to galvanic cells?

• The Nernst equation is used to calculate the resistance of galvanic cells.

• The Nernst equation measures temperature changes in galvanic cells.

• The Nernst equation determines the mass of electrodes in galvanic cells.

• The Nernst equation calculates the cell potential of galvanic cells based on ion concentrations.