V64 reaction of copper and iodine - Kupfer und Iod
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Top Comments
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Don't eat it...
2 years ago 3
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The stopper would pop out whereas a balloon can expand when volume goes up. Any other mean of sealing would be unpractical.
3 years ago 3
All Comments (28)
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that balloon was like my boner....
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@joeylawn36111 so how did it lose .02 g weight?
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@kmncztms cu coper is used in wires
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@vmelkon Because it could explode due to pressure increase. The balloon allows for some leeway because it can stretch.
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copper is Cu
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What is copper? I don't know the english names of elements :S
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if you used a bubbler then you wouldn't have to worry about a balloon popping. that is assuming the gases produced are water soluble or non-toxic
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aun't this dangerous ??
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No the point is this: Iodine - normally a solid, when heated turns into a purple gas (sublimes). The iodine gas blows up the balloon. But when the test tube is moved to let the copper strip down to the bottom to be heated, the copper reacts with the iodine gas to form copper iodide, a solid. Since the iodine gas has reacted with the copper, the balloon goes back down.
joeylawn36111 4 years ago
You find the explanation (in english too) on the homepage, shown at the end of the video!
Greetings
Netexperimente
Netexperimente 4 years ago