Quick Chemistry Help

[Sociopathic]

Just asking real quick to see if anybody can help me on this...

A 15.00-mL aqueous sample was analyzed for its nitrite content by reaction with 40.13 mL of 0.04013 N acidified potassium permanganate solution, liberating nitrate ion. The excess permanganate was determine by reaction with 0.04013 N iron(II) solution, requiring 2.59 mL to reach equivalence. Determine the g/L concentration of nitrite in the original sample.

Anything you guys can offer would be appreciated

[belfpala]

I would suggest reviewing your notes and textbook and then do your own homework.

[Sociopathic]

N is not M for molarity. N is for Normality, a right pain in the ass of a measurement.

[Aeriel]

N is not M for molarity. N is for Normality, a right pain in the ass of a measurement.

It is,but in this case the assumption of N = mg/L is most likely adequate.

Then calculate the mass of Fe and permanganate. C1V1=C2V2

- - - Updated - - -

It is,but in this case the assumption of N = mg/L is most likely adequate.

Then calculate the mass of Fe and permanganate. C1V1=C2V2

Side note: Nitrate/Nitrite analysis is one of the analyses that regularly run, but this is not the method I use.