How does an acidic environment accelerate corrosion???

Marina89 · 26 Sep 2009, 10:24 PM

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So confused! Different books give different reasons and different equations to support as well.

Also, what are some other methods of cleaning/stabilising artefacts other than electrolysis and removing concretions?

Thanks

annabackwards · 26 Sep 2009, 10:30 PM

Acidic environment accelerate rusting because of the following equilibrium reaction:
Fe (s) + 2H+ (aq) <--> Fe2+(aq) + H2 (g)
Applying Le Chatelier’s principle, an increase in acidity, which is H+ ions, would cause the equilibrium to shift to the right. This would lead to a faster corrosion of the iron.

But i too have seen diffferent ways of it being explained, i guess you should just stick to wha you're most comfortable with

Leeching can be used to clean/stabilise artefacts. It takes a long time to work though.

Marina89 · 27 Sep 2009, 9:34 AM

That helps a lot, thank you!

annabackwards · 27 Sep 2009, 9:40 AM

Glad i helped

26 Sep 2009, 10:24 PM	#1 (permalink)
Marina89 Junior Member HSC: 2009 Gender: Female Join Date: Mar 2009 Posts: 46 Last Activity: 11 Nov 2009, 10:48 PM	How does an acidic environment accelerate corrosion??? You can hide this advertisement by registering. So confused! Different books give different reasons and different equations to support as well. Also, what are some other methods of cleaning/stabilising artefacts other than electrolysis and removing concretions? Thanks

26 Sep 2009, 10:30 PM	#2 (permalink)
annabackwards <3 Prophet 9 AyyyTAR Hater HSC: 2009 Gender: Female Location: Sydney Join Date: Jun 2008 Posts: 3,279 Last Activity: Yesterday, 2:25 PM	Re: How does an acidic environment accelerate corrosion??? Acidic environment accelerate rusting because of the following equilibrium reaction: Fe (s) + 2H+ (aq) <--> Fe2+(aq) + H2 (g) Applying Le Chatelier’s principle, an increase in acidity, which is H+ ions, would cause the equilibrium to shift to the right. This would lead to a faster corrosion of the iron. But i too have seen diffferent ways of it being explained, i guess you should just stick to wha you're most comfortable with Leeching can be used to clean/stabilise artefacts. It takes a long time to work though. __________________ Courses: Extension 1 + 2 maths, Chemistry, Physics, Modern History and Advanced English UAI aim: 99+ Click the user bars to join the groups of the era Want a friendly tutor with experience and plenty of resources? Click here, but hurry as there's only one slot left!

27 Sep 2009, 9:34 AM	#3 (permalink)
Marina89 Junior Member HSC: 2009 Gender: Female Join Date: Mar 2009 Posts: 46 Last Activity: 11 Nov 2009, 10:48 PM	Re: How does an acidic environment accelerate corrosion??? That helps a lot, thank you!

27 Sep 2009, 9:40 AM	#4 (permalink)
annabackwards <3 Prophet 9 AyyyTAR Hater HSC: 2009 Gender: Female Location: Sydney Join Date: Jun 2008 Posts: 3,279 Last Activity: Yesterday, 2:25 PM	Re: How does an acidic environment accelerate corrosion??? Glad i helped __________________ Courses: Extension 1 + 2 maths, Chemistry, Physics, Modern History and Advanced English UAI aim: 99+ Click the user bars to join the groups of the era Want a friendly tutor with experience and plenty of resources? Click here, but hurry as there's only one slot left!

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