Question

Which of the following statements is appropriate for the electrodes to be used in the electrolytic process?

(a) Electrodes provide necessary energy to create or discharge the ions during electrolysis

(b) Electrodes are the ion conducting polymer that contains free ions to carry the current

(c) Electrodes are the solid conducting materials which allows to carry the current during electrolysis

(d) Electrodes provide  physical interface between the electrolyte and electrical circuit that provides energy

This question was posed to me in an online interview.

The question is from Electrochemical Reduction Methods in division Preparative Methods of Solid State Chemistry

Answer 1

Correct choice is (d) Electrodes provide  physical interface between the electrolyte and electrical circuit that provides energy

The explanation: One of the main components of the electrolytic process is electrodes, it provides the physical interface between the electrolyte and electrical circuit that provides the energy. Electrodes of metals, graphite, semiconductors are widely used. Choice of suitable electrodes depends on the electrolyte, electrodes and the manufacturing cost.