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Oxidation Experiment

If you had the follwing two oxides: Hematite (Fe2O3), magnetite(Fe3O4)

How would you conduct a simple experiment to show the different oxides of Iron?

Thank you so much!

PS. In my lab, we just did an experiment with AL and two different unknown Copper oxides: Cu2O and CuO. We were given one of the unknown copper oxides in class, and through the mass loss of oxygen from the reaction with HCL and AL, we had to determine which copper oxide we were given.

Cu2O+2HCl-->2CuCl+H2O
3CuCl+Al-->AlCl3+3Cu

CuO+2HCl-->CuCl2+H2O
3CuCl2+Al-->2AlCl3+3Cu

Solution Preview

The way I would perform this experiment is very similar to the one you performed in lab.

I can think of other experiments, but they would not be quite so simple.

I would start with nearly the same mass of Fe2O3 and Fe3O4 and dissolve each in separate containers with excess HCl (aq), very close to 1.000 g. By keeping both of the masses at 1.000 g, that will make for easy comparison.

Fe2O3(s) + 6HCl(aq) ---> 3H2O(l) + 2FeCl3(aq)

And...

Fe3O4(s) + 8HCl(aq) ---> 4H2O(l) + ...

Solution Summary

The solution provides two separate, simple experiments that could be used to differentiate between the oxides of iron Fe2O3 and Fe3O4, outlining a complete procedure and how the results will distinguish.

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