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Right equation

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Introduction

Which equation is correct? The task set is to prove or disapprove which of the two equation is correct by thermally decomposing CuCo3 and analysing the two possible oxide formed. Equation 1: 2CuCO3 ----> CuO(s) + 2CO2 (g) + 1/2O2 (g) Equation 2: 2CuCO3 ----> CuO(s) + CO2 (g) In order to do this we need to call upon previous knowledge about the mole. The key idea involved in solving this problem is collecting a volume of gas by performing safe and fair test. One mole of gas at room temperature occupies a volume of 24dm�(litres). This is importing in information as when conducting the experiment in a classroom we have to scale it down. If we tired to prove the equation as they stood about, used one mole of Copper Carbonate and just did the above practical for this experiment, in theory we would collect 24dm� of carbon dioxide gas and that would make way to much gas can I wouldn't be able to find a apparatus to collect it all. We would then need to ensure that first and for most we had a big enough vessel or continuer to collect the gas in. ...read more.

Middle

The bung must e tightly inserted to reduce gas loss. Make sure you measure the amount of copper carbonate properly because 0.01g can make change the whole result of the experiment. And I need to repeat the experiment 3 times an Safety Basic carbonate is harmful if swallowed. The dust will also irritate the lungs, skin and eyes. This means that when conducting the experiment we will wear goggles and a lab coat. If it gets on our skin we are to wash the area thoroughly. Wash contaminated clothing before reuse. When dealing with the Bunsen burner we must also take care not to burn ourselves, by either touching the burner while hot or touching and of the equipment it has heated. Equipment Heat proof mat To protect the work surface from the heat or fire produced by the Bunsen burner. Bunsen burner Provide heat and fire to heat up the copper carbonate for the thermal decomposition. Splint To light the Bunsen burner Spatula Carry the Copper carbonate from the container to weighting scaled, then to the boiling tube. Boiling Tube Container for copper carbonated and boiling tube can withstand high amounts of heat and will contain CuCO3. ...read more.

Conclusion

Connect the retort stand and the claw clam together and put the gas syringe inside the clam. 7. Heat the copper carbonated slowly with a laboratory Bunsen burner. 8. When of all copper carbonate change colour, you know it is all reacted, then you way for your gas to cool down. 9 Wait 20 minute before taking a result while the copper oxide cools and all the gas has been released while the copper carbonate decomposes. Wait till the gas in the gas syringe cool down to room temperature before I take a reading because I will be certain that the gas is in room temperature with 24dm gases in one mole. Additional These tests can also prove which equation is correct. Lime water -inject some gas into a boiling tube fill with lime water with the gas syringe and if the lime water turn milky, then carbon dioxide is present. Splint test - inject some gas into a boiling tube and put a glowing splint in it, and if the splint glows even more then a oxygen is presence then equation 1 would be right. Reference "Letts Chemistry - Revise As" By Rob Ritchie" pages 33 - 36. "Essential As Chemistry of OCR" By Ted Lister and Janet Renshaw. http://en.wikipedia.org/wiki/thermal_decomposition http://en.wikipedia.org/wiki/Copper_%28I%29_oxide http://en.wikipedia.org/wiki/Copper_%28II%29_oxide http://en.wikipedia.org/wiki/Desiccator ...read more.

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