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Topic: REDOX  (Read 1897 times)

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Offline sassy

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REDOX
« on: May 19, 2016, 07:11:15 AM »
Hi everyone, I really need help with this question:

Write a balanced chemical equation for the oxidation of Fe(s) by concentrated nitric acid. Two products of the reaction are NO2(g) and Fe3+(aq).

The answer I got was 3 HNO3(aq) + Fe(s) + 3 H+(aq) :rarrow: 3 NO2(g) + Fe3+(aq) + 3 H2O(l) which is incorrect apparently so I am really confused as how to do it. Any help would be much appreciated
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Offline Burner

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Re: REDOX
« Reply #1 on: May 19, 2016, 07:31:54 AM »
Write the two half-equations for Fe(s) and HNO3(aq) respectively first.
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Offline Borek

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Re: REDOX
« Reply #2 on: May 19, 2016, 07:46:16 AM »
Quote from: sassy on May 19, 2016, 07:11:15 AM
The answer I got was 3 HNO3(aq) + Fe(s) + 3 H+(aq) :rarrow: 3 NO2(g) + Fe3+(aq) + 3 H2O(l) which is incorrect apparently

Technically it is correctly balanced.

This can get quite tricky. Why do you think it is incorrect? Were you given some more details about what you are expected to do?

Assuming there is no other oxidizer but H+, where far would the reaction go?
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