I haven't performed many gravimetric analysis yet
, here a small list of the ones that I performed:
1.)Determination of w(FeSO
4) of FeSO
4p.a.
Result: 99.2%
Result with Reinhard-Zimmermann method: 99.01%
2.)Determination of w(Fe) of magnetite.
Result: 68.23%
Result with Reinhard-Zimmermann method: 65.03%.
3.)Determination of w(FeSO
4) of an iron sulfate used to preciptate phosphates in water purification plants.
Result: w(FeSO
4) = 88.68%
Result with Reinhard-Zimmermann method: 88.21%
4.)Determination of w(Fe) of steel.
Result: 98.79%
Result with Reinhard-Zimmermann method: 98.50%
5.)Determination of w(NaCl) of NaClp.a.
Result: 99.45%
Result with Mohr method: 99.91%
6.)Determination of Beta(NaCl) of seawater.
Result: 30,16 g/L
Result with Mohr method: 28.93g/L
7.)Determination of w(NaCl) of thawing salt.
Result: 94.78%
Result with Mohr method: 95.00%
8.)Determination of w(NaCl) of a mixture of NaCl and Na
2SO
4Result: 40,56%
Result with Mohr method: 40.06%
9.)Determination of w(Ni(NO
3)
2) of Ni(NO
3)
2p.a.
Result: 99.30%
10.)Determination of w(Ni) of a Chromium-Nickel steel.
Result: 14,68%
11.)Determination of w(CaCl
2) of CaCl
2p.a.
Result: 99.10%
12.)Determination of w(CaCO
3) in a sample of marmor (I stole the sample from my dad's mineral collection
, Don't tell him I did ....shhhhh....
)
Result: 92,16%
I analyzed the same sample with acid-base titration (back titration): Result: 92.68%
13.)Determination of w(CaSO
4*2H
2O) in a mineral.
Result: 90,34%
14.)Determination of w(K
2O) of a fertilizer.
Result: 12,6%
15.)Determination of w(Na
2SiO
3) of a sodium silicate solution.
Result: w = 5,30%
16.)Determination of w(Pb(NO
3)
2) of Pb(NO
3)
2 p.a.
Result: 98.54%
17.)Determination of w(C) of a sample of coal.
Result: 99.10%
18.)Determination of w(Al) of a sample of Bauxite.
Result: 49.91%
19.)Determination of w(MgO) of a sample containing MgO
Result: 54.65%
Well, that's all, but I think that it's enough
I would be curious to know which ones you performed...
Edit: added resluts with Mohr/Reinhard-Zimmermann method