CATHODE-ANODE REACTION COUPLES CAUSE CORROSION
Description
The cathode is the electrode where the reduction reaction occurs. At the cathode, there is an addition of electrons or a reduction in the oxidation number of a chemical substance. For example, in an electrochemical cell that uses metal electrodes such as copper, reduction of copper ions (Cu2+) to copper metal (Cu) occurs at the cathode. The anode, on the other hand, is the electrode where the oxidation reaction takes place. At the anode, there is a release of electrons or an increase in the oxidation number of a chemical substance. For example, in an electrochemical cell that uses metal electrodes such as zinc, oxidation of zinc metal (Zn) to zinc ions (Zn2+) occurs at the anode. The cathode-anode reaction pair arises due to the difference in electrochemical potential between the two electrodes. This potential difference drives the flow of electric current in an electrochemical cell. The electrons released at the anode travel via a metal wire or other conductive path to the cathode, forming an electric current. This process is known as a redox reaction or an electrochemical reaction.
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The cathode is the electrode where the reduction reaction occurs. At the cathode, there is an addition of electrons or a reduction in the oxidation number of a chemical substance. For example, in an electrochemical cell that uses metal electrodes such as copper, reduction of copper ions (Cu2+) to copper metal (Cu) occurs at the cathode. The anode, on the other hand, is the electrode where the oxidation reaction takes place. At the anode, there is a release of electrons or an increase in the oxidation number of a chemical substance. For example, in an electrochemical cell that uses metal electrodes such as zinc, oxidation of zinc metal (Zn) to zinc ions (Zn2+) occurs at the anode. The cathode-anode reaction pair arises due to the difference in electrochemical potential between the two electrodes. This potential difference drives the flow of electric current in an electrochemical cell. The electrons released at the anode travel via a metal wire or other conductive path to the cathode, forming an electric current. This process is known as a redox reaction or an electrochemical reaction.