# Nitrates and Nitrites with FeSO4 + CH3COOH

by Knightycloud
Tags: brown_ring_test, nitrate, nitrite
 P: 86 1. The problem statement, all variables and given/known data 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??? 2. Relevant equations NO2-(aq) + FeSO4(aq) + CH3COOH(aq)$\Rightarrow$ [A Brown Circle]??? or is this equation invalid??? 3. The attempt at a solution Nothing being attempted!!! :(
 Admin P: 22,709 NO2- or NO3-, you are inconsistent. If NO3- try to find out what is the reaction involved.
 P: 86 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-.
Admin
P: 22,709

## Nitrates and Nitrites with FeSO4 + CH3COOH

I find it rather unlikely. While NO2- can interfere, test in general requires concentrated sulfuric acid, I doubt acetic acid is strong enough.
 P: 86 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!!!
 Admin P: 22,709 That's what I expect, but I have learned long to not assume everything I expect is true.

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