Answer:
Chemical Causes of Rusting
Explanation:
The causes of corrosion require the presence of water and oxygen. Water can combine with carbon dioxide in the air to form carbonic acid, a weak acid.
When this acidic solution reaches iron, two reactions occur. First, the acidified water (a good electrolyte – more on this later) will dissolve some of the iron by removing electrons. Then, the water will begin to break down into hydrogen and oxygen. Free oxygen reacts with dissolved iron to form iron oxide, and iron oxide is rust.
