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Corrosion (1 Viewer)

Cheezy-G

Member
Joined
Feb 3, 2005
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39
Why doesn't iron rust in kerosene and silica gel. I know it is because of no water but how do you explain it.
 

Jumbo Cactuar

Argentous Fingers
Joined
Sep 8, 2003
Messages
425
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Male
HSC
2003
Well a mixture of kerosene and silica gel keeps atmospheric water out.

Rust is oxidized iron. So it is redox chemistry;

Fe(s) <--> Fe2+(aq) + 2 e-
4e- + 4 H+(aq) + O2(aq) <--> 2 H2O(l)

No water -> no ionic product -> no H+

One line answer is;

Kerosene and silica gel suppress the corrosion of iron by exclusion of oxidizing agents.
 

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