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What is the formula for rusting?

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What is the formula for rusting?

Posted by Priya Vaishnav 6 years, 4 months ago

CBSE > Class 08 > Science

1 answers

Yogita Ingle 6 years, 4 months ago

Iron when reacted with both water and oxygen which present in air (moist air), corrodes. Its silvery colour changes to a reddish-brown, because hydrated oxides are formed which is commonly called as rust.

Reaction showing formation of rust when reacted with water in presence of oxygen (atmosphere).
4Fe + 3O₂+ XH₂O → 2Fe₂O₃.XH₂O

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