Question

Severe corrosion of metals occurred when coupled with platinum is due to the higher current density for hydrogen evolution but not due to the reversible potential of the platinum-platinum ion electrode.

(a) True

(b) False

I have been asked this question in an international level competition.

Enquiry is from Modern Theory Applications topic in chapter Modern Theory Applications of Corrosion Engineering

Answer 1

Correct answer is (a) True

To elaborate: Severe corrosion of metals occurred when coupled with platinum is due to the higher current density for evolution but not due to the reversible potential of the platinum-platinum ion electrode. Notably, platinized platinum has the highest exchange current density for hydrogen evolution.