Question

Define corrosion. How does it affects?

Answer 1

It is basically defined as a natural process that causes the transformation of pure metals into undesirable substances when they react with substances like water or air.

Factors Affecting Corrosion:

1. Exposure of the metals to air containing gases like $C{O}_2,S{O}_2,S{O}_3$etc.

2. Exposure of metals to moisture, especially salt water (which increases the rate of corrosion).

3. Presence of impurities like salt (eg. NaCl).