Question

The velocity with which an ion moves under a potential gradient of __________ volt/cm in a solution is called ionic mobility.

(a) 5

(b) 4

(c) 3

(d) 1

I got this question in an online quiz.

My doubt stems from Faraday’s Laws of Electrolysis topic in section Corrosion, Electrolysis, Fuel Cells and Batteries of Engineering Chemistry II

Answer 1

Right answer is (d) 1

To explain: The velocity with which an ion moves under a potential gradient of one volt/cm in a solution is called ionic mobility. The separation of ions according to their mobility in the gas phase is called ion mobility spectrometry, in liquid phase, it is called electrophoresis.