Which of the following statements about an electrochemical cell is correct? Oxidation occurs
Answer Details
The correct statement is "Oxidation occurs at the anode in an electrochemical cell." In an electrochemical cell, there are two half-cells: the anode and the cathode. At the anode, oxidation takes place, meaning that electrons are lost by the species being oxidized. These electrons travel through an external circuit to the cathode, where reduction takes place, and the electrons are gained by the species being reduced. This flow of electrons through the external circuit generates an electric current. The salt bridge is used to maintain electrical neutrality by allowing the flow of ions between the half-cells. The aqueous solution is where the species being oxidized and reduced are dissolved.