Question

Which is more corroded when the iron plates of steamers are connected with block of Zn metal and kept in contact of sea water?Select the proper choice from the given multiple choices.
(A) Iron
(B) Zinc
(C) Both
(D) Neither of the metals

Answer 1

Answer:

Explanation:

Example of corrosion: Rusting of Iron.

Now, coming back to the question, the oxidation potentials of Zn & Fe are as follows:

Oxidation Potential of Zn= 0.76 V

Oxidation Potential of Fe= 0.44 V

Since, the oxidation potential of Zn is higher than Fe, it looks that Zn is more reactive towards oxidation.

However, there is a catch here.

Zn is actually , more resistant towards corrosion than Fe.