in the lab of reaction with copper
copper is suppose to loose mass because it oxidates.
its that right or does it gain mass
thanks
In the lab, when copper reacts with certain substances, it usually loses mass. This is because copper undergoes oxidation, where it loses electrons and forms positive copper ions (Cu2+).
To determine whether copper gains or loses mass in a reaction, you can perform an experiment. Here's how you can do it:
1. Start with a piece of clean and dry copper. Weigh it using a balance and record its initial mass.
2. Place the copper in a container or solution that will promote oxidation, such as a solution of nitric acid (HNO3). Make sure to wear appropriate safety equipment.
3. Allow the copper to react with the solution for a specific period of time, stirring occasionally.
4. After the reaction, remove the copper from the solution and rinse it thoroughly with distilled water to remove any residues.
5. Dry the copper carefully and weigh it again using the same balance. Record its final mass.
Finally, compare the initial mass with the final mass of the copper. If the final mass is less than the initial mass, it indicates that the copper lost mass during the reaction. On the other hand, if the final mass is greater than the initial mass, it suggests that the copper gained mass, likely due to the reaction with other substances present in the solution.