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G.C.S.E Chemistry Coursework. The Reaction Between Zinc And Copper Sulphate.

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Introduction

G.C.S.E Chemistry Coursework. The Reaction Between Zinc And Copper Sulphate. Plan I am going to investigate the reaction between Zinc and Copper Sulphate. Method The reaction will be exothermic; so that means heat will be given out. I will have to see the temperature difference between each amount of Zinc and store the results onto a graph. The equation for this reaction is: Zinc + Copper Sulphate Zinc Sulphate + Copper. Copper Sulphate is a blue solution, which is toxic, and the Zinc steals the Sulphate (like a bully taking sweats from someone) and that leaves Copper as a solid form. This reaction occurs because Zinc is higher up the table in the reactivity series; I know this because I referred to the textbook. ...read more.

Middle

I will make sure the solution does not get poured down the sink because it kills bacteria that the sewage workers produce. Also I will make sure the laboratory rules are followed accurately. Results table Mass of Zinc Number of moler ratio Temperature Temperature Temperature Moles of Zinc At the start At the end Increase 1 0.015 0.77 21 38 17 1.25 0.019 0.96 23 45 22 1.5 0.023 1.15 25 49 24 1.75 0.027 1.35 26 47 21 2 0.031 1.54 34 47 13 2.25 0.035 1.73 24 44 20 Analysis I've analysed my results and the shape of the graph is steadily inclining except for the one anomalous result. The result depended on four things the temperature, catalyst, concentration and size of particles. ...read more.

Conclusion

Evaluation The method I used in this experiment was displacement, were the copper sulphate and zinc reacted to produce zinc sulphate plus copper, so the more reactive metal (zinc) displaced the less reactive one (copper). During the experiment I have found out that the experiment I carried out was similar to my prediction that made except for one anomalous result. The average temperature raise was 19.5 and my prediction was 20. It probably would have been higher if the anomalous result was higher that 13. The only reasons for the anomalous result was either because I didn't let the temperature drop from the previous experiment or I didn't let it go to its maximum temperature before ending the experiment. So my prediction was nearly all correct except one result that made the average lower and the line of best fit on the graph decrease. ...read more.

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