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Oxygen: Bleaching Powder Solution Heated with a Little Cobalt Oxide at 70–80 °C
Oxygen from bleaching powder, as Thorpe's Dictionary (1913) gives it: a strong solution of bleaching powder with a little cobalt oxide gives a steady stream of oxygen at about 70–80 °C, leaving calcium chloride.
The picture: our diagram.
Intermediate
1 day
Instructions
1
1
Mix bleaching powder solution with a little cobalt oxide
Mix bleaching powder solution with a little cobalt oxide
Make a concentrated solution of bleaching powder and add a small quantity of cobalt oxide. No amounts are given. Ours: in a flask.
Materials for this step:
Bleaching Powder1 as requiredTools needed:
Cobalt Oxide
Water
Round-Bottom Flask
Chemical Splash Goggles2
2
Heat to about 70–80 °C
Heat to about 70–80 °C
Heat to about 70–80 °C, the best temperature for a steady stream of gas. Ours: a water bath.
Tools needed:
Water Bath
Hot Plate
Thermometer - Lab3
3
Collect the gas over water
Collect the gas over water
Ours: lead the gas through a delivery tube into gas jars standing full of water in a pneumatic trough.
Tools needed:
Glass Delivery Tube
Pneumatic Trough with Gas JarsWaterMaterials
1- 1 as requiredPlaceholder
Tools Required
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