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Reactions of Copper and its compounds
The 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 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|