Displacement reactions of copper
oxide with active elements: Hydrogen, Magnesium,
Carbon.
reazioni di spostamento dell'ossido di rame con
elementi attivi: Idrogeno, Magnesio, Carbonio.
Reaction 1
Ossido rameico + idrogeno --> Rame + Ossido di idrogeno
(acqua)
Cupric oxide + Hydrogen --> Copper + Hydrogen oxide
(water)
The two former preparatory steps weren't shown by the video: 1.
Heating of copper in air to oxidize its suface. Copper was
"roasted" in the bubble of a pipette until it became completely
black. 2. An hydrogen stream was made by adding 100 mL of 6M
sulphuric acid into a lot of zinc beads in a
separated Erlenmeyer flask. Hydrogen gas
was collected in a pipeline and forced to
pass through the bubble pipette. To have a demonstration
of constant flow, the escaping hydrogen gas was ignited
from the opposite orifice of the pipette. The following video
starts from here.
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