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Offline madscientist

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oxalic reaction
« on: 14/03/2006 12:17:46 »
help!!


is it possible for this reaction to happen or am i missing something??because i just couldn't balance it..

SnCl4.5H20  +  H2C2O4.2H20 =  SNC2O4  + HCl + H2O


 

Offline lightarrow

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Re: oxalic reaction
« Reply #1 on: 14/08/2006 16:04:29 »
If it happens, it's a redox reaction from Sn(4) and C(3) that gives Sn(2) anc C(4):
SnCl4*5H20 + 2H2C2O4*2H20 = SnC2O4 + 2CO2 + 4HCl + 9H2O
« Last Edit: 14/08/2006 16:09:38 by lightarrow »
 

Offline eric l

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Re: oxalic reaction
« Reply #2 on: 15/08/2006 06:38:01 »
A similar redox reaction is involved when you use oxalic acid to remove rust.  In that case you reduce Fe(3) to Fe(2).
 

Offline lightarrow

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Re: oxalic reaction
« Reply #3 on: 15/08/2006 10:33:28 »
quote:
Originally posted by eric l

A similar redox reaction is involved when you use oxalic acid to remove rust.  In that case you reduce Fe(3) to Fe(2).


This is very interesting. The oxalic acid needs only to be in acqueos solution?
 

Offline eric l

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Re: oxalic reaction
« Reply #4 on: 15/08/2006 14:09:24 »
It depends.  If you want to remove rust stains from a piece of textile, an aqueous solution will do.  It wil take some time soaking, overnight is what I do.  
But for removing rust stains from a metal object, I made a paste of oxalic acid with as little water as possible, and rubbed this paste over the stains, rinceing with clean water en drying afterwards.
 

Offline lightarrow

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Re: oxalic reaction
« Reply #5 on: 16/08/2006 14:11:37 »
quote:
Originally posted by eric l

It depends.  If you want to remove rust stains from a piece of textile, an aqueous solution will do.  It wil take some time soaking, overnight is what I do.  
But for removing rust stains from a metal object, I made a paste of oxalic acid with as little water as possible, and rubbed this paste over the stains, rinceing with clean water en drying afterwards.


Thank you Eric!. Up to now I only knew diluted solutions of HF as an easy way to remove rust stains from textiles.
 

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Re: oxalic reaction
« Reply #5 on: 16/08/2006 14:11:37 »

 

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