Look again at Figure1 and note the labeling of the electrodes as anode and cathode; also note the direction of electron flow in the external circuit and the signs of the electrodes. Note too the migration of ions in the solutions.
What happens inside an cell?
| A voltaic cell employs a spontaneous oxidation–reduction reaction as a source of energy. It is constructed to separate the reaction physically into two half-reactions, one involving oxidation and the other reduction, with electrons moving from the oxidation half-reaction through the external circuit to the reduction half-reaction. | Look again at Figure1 and note the labeling of the electrodes as anode and cathode; also note the direction of electron flow in the external circuit and the signs of the electrodes. Note too the migration of ions in the solutions. |
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