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Which equation is correct?

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Introduction

Which equation is correct? In this assessed practical the task is to find which equation is correct? 2CuCO3(s) ? Cu2O(s)+2CO2(g)+1/2O2(g) CuCO3(s) ? CuO+CO2(g) I will be trying to prove which of the two equations are right by using a practical method, and calculating how much gas is produced. I will be using a method of collecting the gas that is produced in both the experiment. I will do the same experiment to prove which of the equations it true. I will heat the CuCO to produce gas, from this I would have already calculated the ratio of gas for both the equations and depending on how much is produced then this will provide me with the evidence I need to prove the equations. Also I can prove which equation is correct and support my calculation on detecting the colour of the oxide of copper is produced because if CuO is produced then it will be black however if Cu2O is produced there will be a red residue. From the equation I have predicted the amount of CuCO. ...read more.

Middle

Factors The experiment will not be flawless and there will be factors that will affect the out come of my experiment. The first one is heating all attempts to exactly the same level this can be measured and moderately controlled however there will be some variation between all the attempts. The volume of gas will depend on the room temperature and pressure, these factors I can only monitor can are hard to control, however I will monitor if there are changes and control them, by using a thermometer also I will take a reading only after the gas syringe has cooled because it can effect the reading. Another factor of incorrect measurements is how accurate the equipment is I have chosen very accurate equipment as the scales are to 3 decimal places and the gas syringe must be measured to 2 decimal places. Calculations If the first equation is correct there will be one third as much gas released as there is in the second equation. ...read more.

Conclusion

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. Other Methods In this practical before I chose this method I had planned other methods of measuring the volume and type of gas produced how ever this plans where to complex. * First plan, in this plan I planned to determine which type of gas was produced in the syringe. If there were oxygen present then I would have used equipment to detect the oxygen therefore proving equation 1 correct. * The second plan I devised was also impractical, I would of still measured he amount of gas produced however I would instead of a gas syringe used a water trough and a connecting pipe to a 250cm3 tube o measure how much gas was produced. I didn't use this method because there is room for a lot of errors and anomalous results. From these other methods you can see that the gas syringe method is the best most accurate way to measure the amount of gas produced. ...read more.

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