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Corrosion

What is the c...

Question

What is the chemical formula of rust?

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Solution

The reddish brittle coating formed on iron especially when chemically attacked by moist air and composed essentially of hydrated ferric oxide.

Fe(OH) $_{3}$ dehydrates to produce Fe $_{2}$ O $_{3}$ . nH $_{2}$ O(s).

Thereby, the chemical formula for rust is Fe $_{2}$ O $_{3}$ . nH $_{2}$ O.

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