Electrochemical Cells

Physics ⇒ Electricity and Magnetism

Electrochemical Cells starts at 10 and continues till grade 12. QuestionsToday has an evolving set of questions to continuously challenge students so that their knowledge grows in Electrochemical Cells. How you perform is determined by your score and the time you take. When you play a quiz, your answers are evaluated in concept instead of actual words and definitions used.

See sample questions for grade 11

A cell is constructed with the following half-cells: Fe²⁺/Fe (E° = -0.44 V) and Pb²⁺/Pb (E° = -0.13 V). Which metal will act as the anode?

Describe the flow of ions in the salt bridge of a galvanic cell.

Describe what happens to the mass of the anode and cathode in a galvanic cell during operation.

Explain the difference between a galvanic cell and an electrolytic cell.

A cell is constructed with the following half-cells: Fe²⁺/Fe (E° = -0.44 V) and Pb²⁺/Pb (E° = -0.13 V). Which metal will act as the anode?

A student sets up a galvanic cell with Mg and Cu electrodes. The standard reduction potentials are: Mg²⁺ + 2e^- → Mg (E° = -2.37 V), Cu²⁺ + 2e^- → Cu (E° = 0.34 V). What is the standard cell potential?

Calculate the cell potential at 25°C for a cell with the following half-reactions: Ag⁺ + e^- → Ag (E° = 0.80 V), Cu²⁺ + 2e^- → Cu (E° = 0.34 V). Assume standard conditions.

In a Daniell cell, zinc is used as the anode and copper as the cathode. Which metal is oxidized?

In an electrochemical cell, what is the purpose of the salt bridge? (1) To complete the circuit by allowing ion flow (2) To provide a path for electrons (3) To separate the electrodes (4) To increase the voltage

Which direction do electrons flow in an external circuit of a galvanic cell? (1) From anode to cathode (2) From cathode to anode (3) Both directions (4) No flow

Which of the following best describes an electrochemical 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 stores mechanical energy (4) A device that produces heat from chemical reactions

Which of the following is a primary cell? (1) Lead-acid battery (2) Nickel-cadmium cell (3) Dry cell (4) Fuel cell

Fill in the blank: In a galvanic cell, the _______ is the electrode where reduction occurs.

Fill in the blank: In an electrochemical cell, the flow of _______ in the external circuit constitutes the electric current.

Fill in the blank: The process of loss of electrons is called _______.

Fill in the blank: The standard cell potential is measured under conditions of 1 M concentration, 1 atm pressure, and a temperature of _______ K.

If the concentration of ions in the half-cells of a galvanic cell is not 1 M, will the cell potential be equal to the standard cell potential?

True or False: In a fuel cell, the reactants are continuously supplied to the cell.

True or False: In a galvanic cell, the anode is the electrode where oxidation occurs.

True or False: In a galvanic cell, the cathode is positive relative to the anode.