Wednesday, 30 March 2016

2.20 describe the laboratory preparation of carbon dioxide from calcium carbonate and dilute hydrochloric acid

Dilute HCL will react with calcium carbonate (aka marble chips) to produce calcium chloride, water and carbon dioxide...

 Method

 - Put marble chips at the bottom of a flask
- Fill the flask with hydrochloric acid, it doesn't have to be full, just covering the marble chips
- immediately attach a bung with a delivery tube into an upturned test tube in water
- the carbon dioxide will collect in this test tube
Equations

 hydrochloric acid + calcium carbonate ---> calcium chloride + water + carbon dioxide

 2HCL(aq) + CaCO3(s) ---> CaCl2(aq) + H2O(l) + CO2(g)
at

1 comment:

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