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Is chromium suitable as a sacrificial node for undeground iron pipes?

Sagot :

Answer:

Metals which are more active than Iron (Fe) can act as a sacrificial anode to Iron. Therefore, all the metals which are higher than Iron in EMF series can act as a sacrificial anode to Iron. Here, (a) Aluminum, (b) Magnesium, (c) Sodium, (f) Zinc and (g) Chromium can act as a sacrificial anode to Iron.