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What happens when an external potential opposing the cell potential is applied to a galvanic cell, and the opposing voltage reaches 1.1 V?

Options

  1. AThe reaction continues in the same direction.
  2. BThe reaction stops, and no current flows through the cell.
  3. CThe cell becomes an electrolytic cell.
  4. DThe cell potential decreases.

Correct answer

B. The reaction stops, and no current flows through the cell.

Step-by-step solution

If an external opposite potential is applied in the galvanic cell and increased slowly, we find that the reaction continues to take place till the opposing voltage reaches the value 1.1 V when, the reaction stops altogether and no current flows through the cell.

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