Experiment 12: Empirical Formulas of Compounds
Procedure A: Empirical Formula of Magnesium Oxide (steps 1-9)
Crucible
and Lid
Ring
Clay
Triangle
Be very careful when moving the
crucible and when lifting the lid
with tongs.
The magnesium
ribbon will either be
in a container like
that shown below or
in an envelope.
Sandpaper if Mg is
oxidized on the
surface
25 cm Mg
Procedure B: Empirical Formula of Copper Sulfide (steps 1-7)
Sulfur
Crucible
Tongs
Scoopula
Cu
Sandpaper to clean
Cu, if needed
Hold the burner in your hand to enable heating of the entire surface of the crucible.