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What is essensial condition for rusting?

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What is essensial condition for rusting?
  • 3 answers

Harsh Sahitya 6 years, 2 months ago

Presence of oxygen from air and water as water vapour from moist air is essential for rusti

Jon Michel 6 years, 2 months ago

The presence of water and oxygen is essential for the rusting of iron. Impurities in the iron, the presence of water vapor, acids, salts and carbon dioxide hastens rusting. Pure iron does not rust in dry and carbon dioxide free air.

Gaurav Seth 6 years, 2 months ago

Rusting of iron (Fe) is caused by oxidation of Fe to form Fe2O3.

The two essential conditions are: 

a) Presence of Oxygen

b) Presence of Water whose pH is in acidic range.

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