What is the main function of a salt bridge in a galvanic cell?

Practice Questions

Q1
What is the main function of a salt bridge in a galvanic cell?
  1. To provide a path for electrons
  2. To maintain charge balance
  3. To increase voltage
  4. To decrease resistance

Questions & Step-by-Step Solutions

What is the main function of a salt bridge in a galvanic cell?
  • Step 1: Understand that a galvanic cell is a device that generates electricity through a chemical reaction.
  • Step 2: Recognize that in a galvanic cell, there are two parts called half-cells, one for oxidation and one for reduction.
  • Step 3: Know that during the chemical reaction, electrons flow from one half-cell to the other, creating a charge imbalance.
  • Step 4: Learn that a salt bridge is a tube filled with a salt solution that connects the two half-cells.
  • Step 5: Realize that the salt bridge allows ions to move between the half-cells to balance the charge.
  • Step 6: Conclude that the main function of the salt bridge is to maintain charge balance by allowing ions to flow.
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