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## Is There A Difference Between The Reactivity Series And Electrochemical Series?

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### Is There A Difference Between The Reactivity Series And Electrochemical Series?

In electrolysis, the terms "reactivity series" and "electrochemical series" are used very loosely. Some books term them to be the same but based on what I have learnt, the reactivity series is usually for the reactivity of metals, e.g.: Na, K, Ca..
While for electrochemical series they include the reactivity of metals and the reactivity of non metals eg: SO4^2-, NO3^-,...,H+,Cu^2+, Ag+, with Ag+ being the most likely to be discharged first.

From what I have said, is this correct or can we actually classify both series to be the same?
Thank you!
Watelford

Posts: 56
Joined: Thu Jan 16, 2014 1:55 pm

### Is There A Difference Between The Reactivity Series And Electrochemical Series?

In electrolysis, the terms "reactivity series" and "electrochemical series" are used very loosely. Some books term them to be the same but based on what I have learnt, the reactivity series is usually for the reactivity of metals, e.g.: Na, K, Ca..

While for electrochemical series they include the reactivity of metals and the reactivity of non metals eg: SO4^2-, NO3^-,...,H+,Cu^2+, Ag+, with Ag+ being the most likely to be discharged first.

From what I have said, is this correct or can we actually classify both series to be the same?

Thank you!
Donell

Posts: 48
Joined: Wed Apr 16, 2014 5:56 am

### Is There A Difference Between The Reactivity Series And Electrochemical Series?

I can understand your question! For many purposes, both series are much the same but they are NOT identical! You will find slight differences in the order, particularly in detailed tables.

As the names suggest the reactivity series is in order of reactivity, but the electrochemical series is based on voltages connected with the discharge in electrolysis (redox potential in volts)
Adio

Posts: 50
Joined: Mon Jan 20, 2014 9:25 pm

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