Question

what type of electrochemical cell is described in this example? mg / mg²⁺ fe / fe²⁺ galvanic cell downs cell electrolytic cell prokaryotic cell

Explanation:

To determine the electrochemical cell type, we analyze the options:

• Galvanic Cell: Converts chemical energy to electrical energy, uses spontaneous redox reactions, has two half - cells (anode and cathode) with a salt bridge (here, the NaCl - containing bridge) to allow ion flow. The Mg/Mg²⁺ and Fe/Fe²⁺ half - cells can undergo a spontaneous redox reaction (Mg is more reactive than Fe, so Mg will oxidize and Fe²⁺ will reduce).
• Downs Cell: Is used for the electrolysis of molten NaCl to produce Na and Cl₂, not relevant here.
• Electrolytic Cell: Requires an external voltage source to drive non - spontaneous reactions, but this setup has a voltmeter (to measure voltage from spontaneous reaction), not an external power source.
• Prokaryotic Cell: Is a type of biological cell (like bacteria), not an electrochemical cell.

So the cell in the example is a Galvanic Cell.

Answer:

A. Galvanic Cell