How to Make Calcium Carbonate

Was out down south and thought i sould take some chemistry to their, i went to bunnings to look for calcium carbonate and saw 2kg for $13, but it said only 37% CaCO3 so i thought that was shit, so i thought, how could i make it easy...... sea shells, so i collected heaps to do this reaction to get almost pure CaCO3 CaCO3 +2 HCl = CO2 + CaCl2 + H2O CaCl2 + NaHCO3 = CO2 + CaCO3 + H2O + NaCl Enjoy Sites; http://www.facebook.com/pages/Chemistry-Alchemist/255977507754133 http://toothpick93.blogspot.c

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• #co2
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• #cacl2