# Meaning of electrochemical vs nonelectrochemical steps

Can someone please explain to me what is meant by an electrochemical reaction step and how it differs from a nonelectrochemical reaction step in the same overall reaction in the context of electrocatalysis?

A simple example with H2 or H2O would be sufficient.

• $\ce{H^+ + OH^- <=> H2O}$ is a "nonelectrochemical" reaction step – MaxW Jul 27 '18 at 13:55
• And electrolysis of $\ce{H2SO4}$ in water is electrochemical. See bbc.co.uk/schools/gcsebitesize/science/add_gateway_pre_2011/… – DrMoishe Pippik Jul 27 '18 at 21:18
• @MaxW can you please elaborate why it is not an electrochemical step. To me it seems that two charged species interacted. This is the confusing part for me. Is there a definition one can use? – koroma Jul 28 '18 at 1:07