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Music used with permission from Olive Musique, Premiumbeat.com
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Reactions of Copper and its compoundsThe exercise of this experiment is for students to practice their scientific report writing skills through the submission of a partial practical report.
I will list some of the groups' mass measurements below when we collect them. |
| Copper Turnings (g) | Zinc (g) | Evaporating Dish (g) | Evaporating Dish + Product (g) | Product (g) | |
| Group 1 | 1.55 | 5.1 | 43.65 | 45.10 | 1.45 |
| Group 2 | 1.58 | 5.15 | 54.29 | 55.8 | 1.5 |
| Group 3 | 1.61 | 5.05 | 39.66 | 42.10 | 2.44 |
| Group 4 | 1.57 | 5.00 | 29.29 | 30.68 | 1.39 |
| Group 5 | 1.58 | 5.03 | 60.03 | 62.24 wet | 2.21 |
| Group 6 | 1.595 | 5.06 | 59.63 | 60.18 unreacted zinc | 0.55 |
| Group | Copper turnings (g) | Zinc (g) | Product (g) | Experimental Yield (%) | Notes |
|---|---|---|---|---|---|
| 1 | - | 4.8 | 1.46 | - | A small amount of product was lost when decanting during step 3 |
| 2 | 1.53 | 4.98 | 1.20 | 78.4 | Spilt a little of the reactants while decanting |
| 3 | 1.78 | 5.25 | 1.08 | 60.7 | Some of the solution was spilled while transferring to evaporating dish |
| 4 | 1.54 | 5.00 | 2.59 | 168.2 | Errors may have occurred during the distillation process and the drying process |
| 5 | 1.5 | 5 | 1.49 | 99.3 | Some unreacted zinc left in the sample due to limited surface area of contact with the sulphuric acid |
| 6 | 1.54 | 5.01 | 1.52 | 98.1 | No spillages |
