Podcast
Questions and Answers
What is the main difference between an electrochemical cell and an electrolytic cell?
What is the main difference between an electrochemical cell and an electrolytic cell?
Electrochemical cell converts chemical energy into electrical energy based on spontaneous redox reactions, while an electrolytic cell converts electrical energy into chemical energy for non-spontaneous reactions.
What is the basis for the functioning of an electrochemical cell?
What is the basis for the functioning of an electrochemical cell?
Electrochemical cells operate based on spontaneous redox reactions, where the Gibbs free energy change (ΔG) is negative.
Describe the setup of electrodes in an electrochemical cell versus an electrolytic cell.
Describe the setup of electrodes in an electrochemical cell versus an electrolytic cell.
In an electrochemical cell, two electrodes are usually placed in separate beakers, while in an electrolytic cell, both electrodes are suspended in the same electrolyte solution or melt.
What is the primary purpose of a fuel cell?
What is the primary purpose of a fuel cell?
Explain the importance of the Nernst Equation in electrochemistry.
Explain the importance of the Nernst Equation in electrochemistry.
How do batteries differ from fuel cells in terms of energy conversion?
How do batteries differ from fuel cells in terms of energy conversion?
Why does the conductivity of an electrolyte decrease on dilution?
Why does the conductivity of an electrolyte decrease on dilution?
Define limiting molar conductivity.
Define limiting molar conductivity.
State Kohlrausch’s law of independent migration of ions and provide one application.
State Kohlrausch’s law of independent migration of ions and provide one application.
Define molar conductivity (Lm).
Define molar conductivity (Lm).
Define Kohlrausch’s law of independent migration of ions.
Define Kohlrausch’s law of independent migration of ions.
Define limiting molar conductivity.
Define limiting molar conductivity.
What is the formula to calculate Ecell for a half cell reaction?
What is the formula to calculate Ecell for a half cell reaction?
What is the standard cell potential (E°cell) for the given reaction?
What is the standard cell potential (E°cell) for the given reaction?
What is the value of Ecell for the oxidation-reduction reaction involving Zn and Cu ions?
What is the value of Ecell for the oxidation-reduction reaction involving Zn and Cu ions?
Why does conductivity decrease with a decrease in concentration for both weak and strong electrolytes?
Why does conductivity decrease with a decrease in concentration for both weak and strong electrolytes?
What is the value of DG° for the given reaction?
What is the value of DG° for the given reaction?
If the external opposing potential is less than 2.71 V, in which direction will the current flow?
If the external opposing potential is less than 2.71 V, in which direction will the current flow?
What is the overall reaction that takes place in a mercury cell during its operation?
What is the overall reaction that takes place in a mercury cell during its operation?
Why is a mercury cell considered a primary battery?
Why is a mercury cell considered a primary battery?
What is the advantage of a mercury cell in terms of cell potential?
What is the advantage of a mercury cell in terms of cell potential?
What type of cell is the lead storage battery?
What type of cell is the lead storage battery?
What is the net reaction that occurs during the recharging of a lead storage battery?
What is the net reaction that occurs during the recharging of a lead storage battery?
Which cell was used in the Apollo space program?
Which cell was used in the Apollo space program?
Explain how molar conductivity changes with concentration for a weak electrolyte.
Explain how molar conductivity changes with concentration for a weak electrolyte.
Describe the relationship between molar conductivity and concentration for a strong electrolyte.
Describe the relationship between molar conductivity and concentration for a strong electrolyte.
What is the cell constant if the resistance of a conductivity cell containing 0.001 M KCl solution at 298 K is 1500 Ω and the conductivity of the solution is 0.146 × 10^–3 S cm^–1?
What is the cell constant if the resistance of a conductivity cell containing 0.001 M KCl solution at 298 K is 1500 Ω and the conductivity of the solution is 0.146 × 10^–3 S cm^–1?
How many coulombs are required for the oxidation of 1 mol of H2O to O2?
How many coulombs are required for the oxidation of 1 mol of H2O to O2?
Explain why Cl2 gas is liberated at the anode instead of O2 gas during the electrolysis of aqueous NaCl despite having higher E° value for O2.
Explain why Cl2 gas is liberated at the anode instead of O2 gas during the electrolysis of aqueous NaCl despite having higher E° value for O2.
How much charge is required for the reduction of 1 mol of Zn2+ to Zn?
How much charge is required for the reduction of 1 mol of Zn2+ to Zn?
