# Nitrates and Nitrites with FeSO4 + CH3COOH

1. Jun 9, 2012

### Knightycloud

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!!! :(

Last edited: Jun 9, 2012
2. Jun 9, 2012

### Staff: Mentor

NO2- or NO3-, you are inconsistent.

If NO3- try to find out what is the reaction involved.

Last edited: Jun 9, 2012
3. Jun 9, 2012

### Knightycloud

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. Jun 9, 2012

### Staff: Mentor

I find it rather unlikely. While NO2- can interfere, test in general requires concentrated sulfuric acid, I doubt acetic acid is strong enough.

5. Jun 9, 2012

### Knightycloud

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. Jun 10, 2012

### Staff: Mentor

That's what I expect, but I have learned long to not assume everything I expect is true.

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