In electrochemistry, which process occurs at the anode?

In electrochemistry, the process that occurs at the anode is oxidation. The anode is defined as the electrode where oxidation takes place during an electrochemical reaction. Oxidation involves the loss of electrons from a substance, which results in an increase in its oxidation state.

At the anode, for example, a metal may lose electrons to form metal ions, or an ionic species can lose electrons to convert to a neutral atom or molecule. This process is critical for the functioning of electrochemical cells, as it provides the electrons that flow through the external circuit, ultimately powering devices or driving chemical reactions.

Understanding that oxidation occurs at the anode is fundamental in electrochemistry, affecting various applications, from batteries to electroplating and corrosion processes.