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 12
A cell is constructed with the following half-cells: Pb²⁺/Pb (E° = -0.13 V) and Ni²⁺/Ni (E° = -0.25 V). Which metal will be oxidized?
Describe the main difference between a galvanic cell and an electrolytic cell.
Explain why a salt bridge is necessary in a galvanic cell.
Explain why the anode is negative in a galvanic cell but positive in an electrolytic cell.
A cell is constructed with the following half-cells: Ag⁺/Ag (E° = +0.80 V) and Fe²⁺/Fe (E° = -0.44 V). Calculate the standard cell potential.
A cell is constructed with the following half-cells: Pb²⁺/Pb (E° = -0.13 V) and Ni²⁺/Ni (E° = -0.25 V). Which metal will be oxidized?
Calculate the number of moles of electrons transferred when 1 mole of Zn is oxidized to Zn²⁺.
Calculate the standard cell potential (E°cell) for a cell made of Zn/Zn²⁺ (E° = -0.76 V) and Cu/Cu²⁺ (E° = +0.34 V).
Which direction do electrons flow in a galvanic cell? (1) From cathode to anode (2) From anode to cathode (3) Both directions (4) No flow of electrons
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 NOT a component of a typical electrochemical cell? (1) Electrodes (2) Salt bridge (3) Voltmeter (4) Transformer
Which of the following is NOT a function of the salt bridge in an electrochemical cell? (1) Completing the circuit (2) Allowing ion flow (3) Preventing charge buildup (4) Supplying electrons to the electrodes
In a voltaic cell, the half-cell with the higher reduction potential acts as the _______.
In an electrochemical cell, the flow of electrons is from the _______ to the _______.
The electrode at which oxidation occurs in an electrochemical cell is called the _______.
The function of the salt bridge in an electrochemical cell is to _______.
State whether the following statement is true or false: In an electrolytic cell, the cathode is positive.
True or False: In a galvanic cell, the anode is always the negative electrode.
True or False: The cell potential depends on the concentrations of the solutions in the half-cells.
True or False: The cell potential of a galvanic cell is always positive under standard conditions.
