[junoso]

I'm trying to figure out how many grams is equal to 1N(normal) of ceric ammonium nitrate. The molecular weight is 548.26grams. Please *delete me* I've been stuck on this question for 2 days!

[sjb]

With respect to what?

The issue with normalities is that you need a base reaction to say what you're (hypothetically) titrating against.

1 mole of CAN will formally dissociate to give 2 moles of ammonium ions, 1 mole of ceric ions and 6 moles of nitrate ions.

So if you're looking at wrt to anions, 1N would be 91.4g per litre, but if it's ammonium, 274g / l

S

[AWK]

It depends on the method of titration. In redox titration
Ce⁴⁺ => Ce₃₊
and an equivalent is equal to mole

[junoso]

Yes, this is a redox titration. I'm using this as a titrant and my sample contains ferric ammonium sulfate solution(10% in 15% H2SO4). I thought it would be 1N=1M correct?

[AWK]

Do you mean (NH4)2Fe(SO4)2 ? (ferrous)

[junoso]

No, ferric FeNH4(SO4)2 12H2O

[AWK]

Then, how can you perform titration
Fe(III) cannot be easily oxidzed .
Most redox titration use oxidation Fe(II) to Fe(III)