Question

Electrode which does not take part in chemical reaction and helps only in exchange of electrons is known as:

• A. anode
• B. cathode
• C. both anode and cathode
• D. inert electrode

Answer 1

The correct option is D inert electrode

An inert electrode is one which, during electrolysis, can supply or withdraw electrons from an electrolyte, and thereby promote chemical reactions without itself participating in any reaction.
A simple example is the electrolysis of acidulated water using platinum electrodes. At the cathode a reaction of this kind occurs, in which the Pt of the electrode plays no chemical part.