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Karnataka Board PUCPUC Science 2nd PUC Class 12

Galvanic or Voltaic Cell

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Estimated time: 5 minutes
Maharashtra State Board: Class 12

Key Points: Galvanic or Voltaic Cell

Components of a Galvanic Cell

Component Key Points
Electrodes Surfaces where oxidation and reduction occur may be inert or active
Anode Electrode where oxidation occurs; in a galvanic cell → negative electrode
Cathode Electrode where reduction occurs; in a galvanic cell → positive electrode
Electrolyte Substance that ionises in solution or molten state; provides ions for conduction; placed in separate containers (half-cells)
Salt Bridge (Structure) U-shaped tube with electrolyte
Salt Bridge (Functions) Completes electrical circuit; maintains electrical neutrality; prevents mixing of solutions

6. Cell Notation 

  • Anode written on the left, cathode on the right

  • Example:

    Cu(s) | Cu²⁺(aq) || Ag⁺(aq) | Ag(s)

  • Single line (|) → phase boundary

  • Double line (||) → salt bridge

Shaalaa.com | Electrochemistry part 5 (Galvanic Cell Working, Redox Couples)

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Electrochemistry part 5 (Galvanic Cell Working, Redox Couples) [00:09:01]
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