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AS Chemistry Coursework - Rosalind Brock Winter 2002/3 Decomposition of copper carbonate Aim Copper has two oxides, Cu2O, and CuO. Copper carbonate, CuCO3 decomposes on heating to form one of these oxides and an equation can be written for each possible reaction Equation 1: 2CuCO3 (s) ? Cu2O (s) + 2CO2 (g) + 1/2 O2 (g) Equation 2: CuCO3 (s) ? CuO (s) + CO2 (g) The aim of this experiment is to prove which of these two equations is correct. Background Theory It is possible to determine which equation is correct by measuring the volume of gas given off by the decomposition. This is volumetric analysis. The equation is written in moles. 1 mole of any substance contains the same number of particles as 12g of carbon-12. 1 mole of any element contains 6.01 x 1023 atoms. 1 mole of a molecular compound contains 6.01 x 1023 molecules. This means that in...

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