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Which equation is correct for this reaction involving Copper Carbonate?

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Introduction

WHICH EQUATION IS CORRECT??? 1. 2CuCO3 (s)-------- Cu2O (s) + 2CO2 +1/2O2 (g) 2. CuCO3 (s) --------- CuO (s) + CO2 (g) I will carry out an experiment, which will tell me which of the two equations is true. To do this I will measure the amount of gas given off in the reaction. From my calculations I can work out which equation is true, as equation 1 gives out more gas than equation 2. I shall use the following apparatus: Stand Clamp Boss Gas syringe Delivery tube Bung Boiling tube Bunsen burner Heat proof matt Test tube holder Diagram: I will add 0.337g of copper carbonate (green powder) ...read more.

Middle

Any water vapour that was given off will cool at this point so will not affect my results. The experiment should be repeated twice more for an average reading to be obtained. A gas syringe is used because it is a very accurate way of recording gas. The gas in the gas syringe must have cooled to room temperature before a reading is taken, as this will affect the accuracy of the results. Basic cooper carbonate contains 61 % by mass of CuCO3. The relative atomic mass of CuCO3 is 123.5g. 123.5/61 * 100 = 202.45, 1 mol of Basic copper carbonate has the mass of 202.45g. ...read more.

Conclusion

Gas also expands when heated so this will have to be considered. I will aim to collect around 50 cm3 of gas. 1. 202.45/30,000 * 50 = (0.337 mol) 50 cm3 2. 24,000/30000 * 50 = 40 cm3 I will use 0.337g or basic copper carbonate, Equation 1 if true will give out 50 cm3 of gas; equation 2 if true will give out 40 cm3 of gas. 1 mol of any gas at room temperature and 1 atmospheric pressure will occupy a space of 24dm3. From this and the amount of gas given off I can work out the mol of the gas given off and find out which of the two equations are correct. ...read more.

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