試題詳解

33What is (are) the purpose of using high electrolyte solutions in electrochemical systems?
(i) To avoid the migration of ions close to the electrode surface by electrostatic attraction under applied voltage, which can lead to adsorption on the electrode surface.
(ii) To avoid too high resistance of the solution, which may cause IR drop.
(iii) Avoid redox reactions in the solution.
(iv) Effectively reduce the surface charge of the analyte, allowing the analyte to approach the electrode surface by diffusion and convection.
(A) i, ii
(B) i, ii, iii
(C) i, ii, iv
(D) i, iii, iv
(E) i, ii, iii, iv