In 1834 Faraday suggested two fundamental laws of electrolysis. According to Faraday, the amount of material deposited or evolved (m) during electrolysis is directly proportional to the current (I) and the time (t), i.e., on the quantity of electricity (Q) that passes through the solution (first law). The amount of the product depends on the equivalent mass of the substance electrolyzed (second law). (In fact, Faraday’s laws are based on two fundamental laws, i.e., on the conservation of matter and the conservation of charge.) Accordingly,