Question

Which of the following is/are correct regarding concentration polarization?

(a) Diffusion of ions in the bulk solution is the controlling factor

(b) It usually operates at a high current density

(c) It is a continuation of Activation polarization

(d) It is a continuation of activation polarization, diffusion of ions in the bulk solution is the controlling factor and it usually operates at high current densities

I got this question during an online interview.

My doubt stems from Modern Theory Principles topic in division Modern Theory Principles of Corrosion Engineering

Answer 1

The correct choice is (d) It is a continuation of activation polarization, diffusion of ions in the bulk solution is the controlling factor and it usually operates at high current densities

The explanation: Concentration polarization is the mechanism of polarization in which diffusion of ions in the bulk solution is the controlling factor, it is a continuation of activation polarization and it usually operates at high current densities.