Rusting of iron is an example for

Iron reacts with atmospheric oxygen and moisture and forms hydrated iron oxide  These reactions take place few months to few years. So, rusting of iron is an example for the slow reaction.

This is a slow chemical reaction that can take months or even years to become noticeable. Factors like high humidity, oxygen availability, and temperature can influence the speed of rusting. Over time, rust weakens the iron, causing damage to structures and tools. To prevent rusting, methods like painting, applying protective coatings, galvanization, or using corrosion inhibitors are often used. Rusting is a clear example of how environmental factors impact chemical processes.