Factors Affecting Rusting
Many factors increase rusting, like the environment's pH and moisture content. Some of the factors are given here.
- Moisture - The process of corrosion is restricted to the presence of water. Exposure to rain is the main purpose for rusting.
- Acid - When the environment pH surrounding the metal is less, the rusting process is fastened. Rusting increases when exposed to acid rain. The Higher the pH, the higher the iron corrosion.
- Salt - The iron rusts fast in the sea because of the availability of salts. Saltwater has many ions which fasten the process of rusting through electrochemical reactions.
- Impurity - Pure form of iron rust slowly compared to iron having a mixture of metals.
The object size of iron can affect the process of rusting. For instance, an iron object has small deficiencies because of smelting.
Differentiate between rusting and burning?
Rusting is the formation of red oxide or iron oxide on the surface of iron and alloys when exposed to air and moisture. Burning is when a substance reacts with oxygen by releasing heat and light.