What is the primary function of a salt bridge in an electrochemical cell?

Practice Questions

Q1
What is the primary function of a salt bridge in an electrochemical cell?
  1. To provide a source of electrons
  2. To maintain charge balance
  3. To increase conductivity
  4. To facilitate ion exchange

Questions & Step-by-Step Solutions

What is the primary function of a salt bridge in an electrochemical cell?
  • Step 1: Understand that an electrochemical cell has two parts called half-cells.
  • Step 2: Know that each half-cell has a different charge (one is positive and the other is negative).
  • Step 3: Realize that as a chemical reaction happens in the half-cells, ions are produced, which can create an imbalance of charge.
  • Step 4: Learn that a salt bridge is a tube filled with a salt solution that connects the two half-cells.
  • Step 5: Understand that the salt bridge allows ions to move between the half-cells to balance the charge.
  • Step 6: Conclude that the primary function of the salt bridge is to maintain charge balance in the electrochemical cell.
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