CBSE · Class 12 · Chemistry · ElectrochemistryDefine corrosion and give a chemical example.

Corrosion is broadly defined as the gradual, highly undesirable deterioration and degradation of structural metal surfaces through unwanted electrochemical oxidation reactions involving atmospheric oxygen, ambient moisture, and various acidic gases present in the environment. A classic, highly prevalent chemical example of corrosion is the formation of reddish-brown rust on iron objects exposed to humid air, where iron metal undergoes oxidation to form hydrated iron(III) oxide over an extended period of time.