AP Chemistry Lab Brockport High School Conversion of a Carbonate to a Chloride Mr Keefer Introduction The laws of conservation of matter and definite proportions were established originally by careful quantitative experiments. These laws can be used to determine reaction yields and to help analyze what is happening in new chemical experiments. This experiment serves as a review of basic stoichiometric relations in a reaction. In this laboratory, Na 2 CO 3 and HCl and reacted to produce several products, and the theoretical yield is compared to actual yield. Materials crucible and cover, triangle, ring stand, balance, bunsen burner, Na 2 CO 3 , HCl (conc.), tongs, eyedropper, goggles Procedures 1. Support a clean, dry crucible and cover in a clay triangle on a ring stand. Strongly heat the crucible and cover to red heat for 2 minutes to drive off any moisture and residue. Allow to cool. 2. When cool, accurately weigh the crucible and cover on the balance. 3.
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