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How oxalic acid removes rust?

Updated: 8/10/2023
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Wiki User

13y ago

Best Answer

Rust is Fe2O3 ....it can not be removed by

1.HCl

2.H2So4

3.Edta.....

but can remove by Oxalic Acid H2C2O4

Fe2O3(s) + 6 H2C2O4(aq) → 2 Fe(C2O4)3 3−(aq) + 3 H2O(l) + 6 H+(aq)

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13y ago
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6y ago

The chemical reaction is:
Fe2O3 + 3H2C2O4 = Fe2(C2O4)3 + 3H20

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Q: How oxalic acid removes rust?
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