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pyroguy10
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[*] posted on 6-8-2006 at 16:41
New substance??


I was just experimenting. I mixed sodium bisulfate, calcium oxide, and potassium nitrate into rubbing alcohol. It started emitting a gas of some kind. I poured this mixture on some paper and the alcohol burned off but the paper was unchanged. What have I created??
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hinz
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[*] posted on 6-8-2006 at 16:53


Was it pure CaO? I think the gas was CO2 liberated of the inpure CaO/CaCO3 by the hydrogen sulfate. Nitrate does not oxidise your alkohol, unless you heat it strongly.

This stuff should go to "Beginnings" I think
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not_important
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[*] posted on 6-8-2006 at 17:50


Most rubbing alcohol has a fair amount of water in it, typically it's 70% isopropanol and 30% water. That's enough water to react with the CaO, dissove some of the NaHSO4 which would react with the CaO or Ca(OH)2 formed from CaO + water, giving more heat, and even make a little HNO3 which would react with the bases.

oxide + water = hydroxide + heat
acid + base = salt + heat

"Beginnings"
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samdar
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[*] posted on 21-8-2006 at 17:31


a mess
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