Applications:

I ∝ c × A

Q = I × t, where Q is the coulomb of electricity consumed

Q = I × t   ∝ c × A × t

Inorganic Analysis

Controlled potential coulometric techniques have widespread use within the determination of various metal ions.  As many as 55 components of the periodic table could be determined through the cathodic reduction of metal ions to metallic state.  Many of the metals (about two dozen element) could form amalgams along with mercury, and therefore controlled potential coulometry along with mercury cathode is commonly preferred.