Name: Jonathan Tam Class: 12A
Chemistry
Experiment report
Aim: To find the empirical formula of Copper oxide
Equipment: Bunsen burner Boss
Heatproof mat Clamp
Combustion tube Delivery tube
Retort Stand Mineral paper
Method:
Diagram:
Results:
Analysis:
Mass of copper metal: 5.78
Mass of oxygen: 7.24 – 5.78 = 1.46g
Mole of copper: 5.78 / 64 = 0.0903
Mole of oxygen: 1.46 / 16 = 0.09125
Ratio:
Copper : oxygen
0.0903 : 0.09125
1 : 1.0105…
1 : 1.01
Therefore the ratio of copper to oxygen is 1:1.
Conclusion:
The ratio of copper to oxygen is 1:1. The empirical formula of copper oxide is CuO.