why does a piece of iron get rusted if left exposed in the open?

why does a piece of iron get rusted if left exposed in the open?
Category: General Reference 9 years ago
sarala
Asked 9 years ago

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The overall chemical equation for the formation of rust is

Iron + water + oxygen = rust

4 Fe(s) + 6 H2O(l) + 3 O2(g) = 4 Fe(OH)3(s)

Iron(III) hydroxide, Fe(OH)3 then dehydrates to produce Fe2O3.nH2O(s) or rust
Arun Selvan
Answered 8 years ago
Arun Selvan

The Oxygen in the air reacts with iron that leads to rusting.

 

rambabu
Answered 4 years ago
rambabu

Oxidation is the main reason it gets rusted when it comes in contact with oxygen and moisture present in the atmosphere.
Sanjeev Gupta
Answered 7 years ago
Sanjeev Gupta

Iron got rusted because it is exposed to water and oxygen. When iron, water and oxygen combine, it will rust.
Bol Bachchan
Answered 6 years ago
Bol Bachchan

damp air
Aakash Agarwal
Answered 7 years ago
Aakash Agarwal

Due to dampness in the air .When iron and water drops in air react it get rust.
PREM LATA
Answered 7 years ago
PREM LATA

Not in open but at every place of moisture iron piece will get rusted.
anil
Answered 7 years ago
anil

Iron reacts to the dampness in the air which form rust on the parts
sreevani
Answered 7 years ago
sreevani

As it exposes to oxygen in the air and creates oxidation which is the cause for rust.
Sasikanth
Answered 7 years ago
Sasikanth

See Sarala the reason behind this is that the oxygen of the air reacts with the iron forming a compound called iron oxide. That's why we paint iron to prevent it from rusting or coming in contact with oxygen of the air. Hope this answer helps you.
ajay
Answered 9 years ago
ajay

rust is iron oxide which is formed when iron is exposed to moisture and air
arjun sai
Answered 8 years ago
arjun sai

Oxidation is main reason of rusting. The moisture present in atmosphere cause the rusting in this case.
suni51
Answered 7 years ago
suni51

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