Nitrates and Nitrites with FeSO4 + CH3COOH

  • #1

Homework Statement


I know that NO3- can be separately identify using newly made FeSO4 + H2SO4 using the brown ring test.
The problem is can we identify NO2- using newly made FeSO4 + CH3COOH??? Replacing H2SO4 with CH3COOH???


Homework Equations


NO2-(aq) + FeSO4(aq) + CH3COOH(aq)[itex]\Rightarrow[/itex] [A Brown Circle]???
or is this equation invalid???


The Attempt at a Solution


Nothing being attempted!!! :(
 
Last edited:

Answers and Replies

  • #2
Borek
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NO2- or NO3-, you are inconsistent.

If NO3- try to find out what is the reaction involved.
 
Last edited:
  • #3
Its NO2- is the problem. I've never learn such a reaction using Acetic acid to identify NO2- and a paper says you can't but I got it from a friend who says that using Acetic acid can identify NO2-.
 
  • #4
Borek
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I find it rather unlikely. While NO2- can interfere, test in general requires concentrated sulfuric acid, I doubt acetic acid is strong enough.
 
  • #5
Yeah, I believe it too. So may I have the final conclusion as Acetic acid does nothing regarding detection of NO2-??? I've never heard such a test too!!!
 
  • #6
Borek
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That's what I expect, but I have learned long to not assume everything I expect is true.
 

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