SE_ Reduction of lead oxide with charcoal by pptfiles

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									     SE: Reduction of lead oxide with charcoal
Required:    porcelain crucible, tripod, pipeclay triangle, BB, crucible tongs,
             Mortar and pestle, spatula, filter papers, yellow lead oxide,
             charcoal, porcelain dish, flux, old floor tile, weigh

Grind some charcoal in a mortar until it is finely powdered. Weigh ca. 1.2 [g] of it on a
filter paper.
Using a second filter paper weigh ca. 22 [g] of yellow lead oxide.
Mix the two substances in a porcelain dish.
Fill the flux (already prepared by the teacher) on the bottom of the crucible. Now add
the mixture and cover it with a charcoal layer.
Put the crucible into the triangle and heat for ca. 10 minutes as intensive as possible.
Finally using the crucible tongs put the hot content quickly on the floor tile.

Observations?

What products could be obtained? – Write down the chemical equation!




     SE: Reduction of lead oxide with charcoal
Required:    porcelain crucible, tripod, pipeclay triangle, BB, crucible tongs,
             Mortar and pestle, spatula, filter papers, yellow lead oxide,
             charcoal, porcelain dish, flux, old floor tile, weigh

Grind some charcoal in a mortar until it is finely powdered. Weigh ca. 1.2 [g] of it on a
filter paper.
Using a second filter paper weigh ca. 22 [g] of yellow lead oxide.
Mix the two substances in a porcelain dish.
Fill the flux (already prepared by the teacher) on the bottom of the crucible. Now add
the mixture and cover it with a charcoal layer.
Put the crucible into the triangle and heat for ca. 10 minutes as intensive as possible.
Finally using the crucible tongs put the hot content quickly on the floor tile.

Observations?

What products could be obtained? – Write down the chemical equation!

								
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