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Topic: Granary rust question with photo  (Read 1024 times)

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Offline polishprodigy93

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Granary rust question with photo
« on: April 14, 2019, 06:50:27 PM »
A) Equation 1: Write the first possible oxidation half-reaction of Fe(s) that produces an iron ion:

B) Using oxidation numbers, describe what is happening in the above reaction.

C) Equation 2: The next possible oxidation reaction of Fe(s) that produces an iron ion is:

D)  Using oxidation numbers, describe what is happening in the above reaction.

E)  Write the oxidation equation that shows how Fe2O3 (s) is produced when the product of equation 1 reacts with H2O(l).

F) Using oxidation numbers, describe what is happening in the above reaction.

So for my first two equations I got below I'm not sure if those are complete however?

Fe(s) -> Fe3+ + 3e-

Fe(s) -> Fe2+ + 2e-
« Last Edit: April 14, 2019, 07:17:14 PM by polishprodigy93 »

Offline Borek

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Re: Granary rust question with photo
« Reply #1 on: April 14, 2019, 07:02:12 PM »
You have to show your attempts at solving the problem to receive help, this is a forum policy.
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Offline polishprodigy93

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Re: Granary rust question with photo
« Reply #2 on: April 14, 2019, 07:05:53 PM »
Hi I added and modified my apologies Borek. I wrote the first two equations however I'm not sure if those are complete.
« Last Edit: April 14, 2019, 07:47:52 PM by polishprodigy93 »

Offline Borek

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Re: Granary rust question with photo
« Reply #3 on: April 15, 2019, 02:50:50 AM »
While technically it is possible to oxidize Fe directly to Fe(III), in practice it is a stepwise process.
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