What is the difference between electrochemical series and galvanic series

It predicts the relative displacement tendencies. It is absolute. It is quantitative. It is used for theoretical calculations. Galvanic series :. This series was developed by studying corrosion of metals and alloys in unpolluted seawater, without their oxide films, if any removed.

In galvanic series, the position of a given metal may shift. Their corrosion can be studied from this series s ince alloys are included in galvanic series The position of metal, when present in the form of an alloy, is different from that of pure metal.

This series comprises metals and alloys. It predicts the relative corrosion tendencies. Position of a metal in the series Fixed Can vary depending on the environment. Alloys Not included. Listed materials Metals and nonmetals Metals, semi-metals and alloys Prediction Predicts the relative displacement tendencies. Predicts the relative corrosion tendencies. Examples include copper, gold, silver, etc. Because of their low reactivity, we often use them to make coins, jewellery, etc.

Moreover, this series gives the electrode potential of these chemical elements, and the list is arranged according to the standard electrode potentials. We can measure this value by taking the particular metal as the cathode and standard hydrogen electrode as the anode. When considering the principle of producing each list, galvanic series stems from the galvanic corrosion of metals and alloys while electrochemical series stems from the standard electrode potential relative to the standard hydrogen electrode potential.

Moreover, the position of a metal in galvanic series may vary according to the environment; however, in the electrochemical series, it has a fixed position. A further difference between galvanic series and electrochemical series is that galvanic series is suitable for practical applications while the electrochemical series is suitable for theoretical applications. With a mind rooted firmly to basic principals of chemistry and passion for ever evolving field of industrial chemistry, she is keenly interested to be a true companion for those who seek knowledge in the subject of chemistry.

Where two materials meet in a green region the corrosion potential can be thought of negligible, meaning, a good combination. Materials that meet in the red zone however should be avoided or used with caution.

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