Losing fingers to chemistry - Periodic Table of Videos
The Prof is back in the lab with a Potassium Dichromate reaction and a story of lost fingers! More chemistry at http://www.periodicvideos.com/ Follow us on Facebook at http://www.facebook.com/peri...
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After this, whenever he was lecturing the reaction, he would hold up his hand and say, "I had a hand in that reaction." So this time, I've got potassium dichromate, some sulfuric acid, and then finally on top of this mixture, which is in- dissolved in water, I'm going to add some diethyl ether. Diethyl ether is an organic compound which does not mix with water. So if I add it carefully, it should float on the surface. So if you look now, you can see, there's a colorless layer here of ether, with the dichromate underneath. So now, I put some hydrogen peroxide into this small beaker, and we'll add a little and see what happens. So watch carefully and with luck something will change. So... What you can see is that there...
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After this, whenever he was lecturing the reaction, he would hold up his hand and say, "I had a hand in that reaction." So this time, I've got potassium dichromate, some sulfuric acid, and then finally on top of this mixture, which is in- dissolved in water, I'm going to add some diethyl ether. Diethyl ether is an organic compound which does not mix with water. So if I add it carefully, it should float on the surface. So if you look now, you can see, there's a colorless layer here of ether, with the dichromate underneath. So now, I put some hydrogen peroxide into this small beaker, and we'll add a little and see what happens. So watch carefully and with luck something will change. So... What you can see is that there...
