B. An intermediate is a molecule or ion that is formed during one elementary reaction step and consumed in a later step. C. Elementary steps involving three molecules or ions are rare. Most reaction mechanisms have more than one step. A. Reduction always takes place at the cathode. B. Good oxidizing agents are molecules or ions that are easily reduced.
All electrochemical cells require a salt bridge.
D. delta G for an electrolytic cell is always positive. An iron pipe connected to a piece of zinc. An aluminum soda can. An iron beam covered with paint. A. Many of the elements, upon ionizing, lose d electrons first.