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Topic: Fe(NO3)3 catalyst in H2O2 decomposition  (Read 8336 times)

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Offline zeoblade

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Fe(NO3)3 catalyst in H2O2 decomposition
« on: August 16, 2009, 04:38:52 AM »
I used Fe(NO3)3 as a catalyst to decompose H2O2.

I found the aqueous solution of Fe(NO3)3 to be clear yellow and then turns H2O2 opaque grape violet before returning the catalyst back to clear yellow.

In this reaction, did any of the Fe III get reduced to Fe II and then converted back to Fe III?

Fe III is clear yellow in colour and Fe II is clear blue. The reaction vessel was enclosed so I didn't observe the colour change except when I immediately combined the two together and saw the opaque violet colour and closed the reaction vessel. Then after 10mins I opened it up to check and found clear yellow colour again.

Would someone please explain what I should have seen theoretically?

Offline Borek

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Re: Fe(NO3)3 catalyst in H2O2 decomposition
« Reply #1 on: August 16, 2009, 05:19:05 AM »
Check if H2O2 doesn't act as a ligand.
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