Electrochemical Reactions

Cell in which chemical energy is converted into electrical energy. It has self sustaining electrode reactions

Cell which converts electrical energy into chemical energy

Gain in electrons resulting in the gain in oxidation number of a cell. (Occurs at the cathode)

Loss in electrons resulting in the increase in oxidation number. (Occurs at the Anode)

Substance which is reduced and gains electrons.

Substance that is oxidised and loses electrons

Electrode where oxidation takes place

Electrode where reduction takes place

Solution that conducts electricity through the movement of ions

Chemical process in which electrical energy is converted to chemical energy OR Use of electrical energy to produce a chemical change

Electrolyte Concentration: 1 mol.dm^-3 Temperature: 298 K (25°C) Pressure (only relevant for gases): 1 atmosphere

• Completes the circuit 2. Provides a path for ion exchange to conserve electrical neutrality

Half-cell consisting of Hydrogen gas which attaches to a platinum electrode in 1,00 mol.dm^-3 H^+ (acidic) solution.