In a galvanic cell, what process occurs at the cathode?

In a galvanic cell, what process occurs at the cathode?

• A. Reduction
• B. Oxidation
• C. Precipitation
• D. Ion Exchange

Answer: (A)

In a galvanic cell, the cathode is where reduction occurs. Electrons flow to the cathode through the external circuit and are used to reduce species in the solution, typically metal ions, turning them into neutral atoms or depositing metal. This gain of electrons corresponds to a decrease in oxidation state. For example, in a Daniell cell, zinc is oxidized at the anode to Zn2+, releasing electrons that arrive at the cathode, where Cu2+ gains electrons and plates out as solid copper. Precipitation or ion exchange can happen in various reactions, but the essential process at the cathode is reduction.

In a galvanic cell, the cathode is where reduction occurs. Electrons flow to the cathode through the external circuit and are used to reduce species in the solution, typically metal ions, turning them into neutral atoms or depositing metal. This gain of electrons corresponds to a decrease in oxidation state. For example, in a Daniell cell, zinc is oxidized at the anode to Zn2+, releasing electrons that arrive at the cathode, where Cu2+ gains electrons and plates out as solid copper. Precipitation or ion exchange can happen in various reactions, but the essential process at the cathode is reduction.