Copper is a widely known and important element. Copper is significant in many aspects of life such as the industrial world, the environment, and even the human body. The focus of this experiment will be the conservation of copper and the different reaction it undergoes. Students will learn how to determine reaction types and how to write balanced equations. A percent yield of copper will also be calculated. The properties of the products will be observed to get a better understanding of the copper cycle.
Materials and Methods:
In the beginning of the experiment, materials were gathered: 50mL beaker, hot plate, plastic funnel, aspirator, rubber tubing, ring stand, clamp, iron ring, weighing boats, magnetic stir bar, 10mL graduated …show more content…
After the data was collected, the copper was then placed into the 50 mL beaker. The 10mL graduated cylinder was then filled with 5mL of 6M HNO3. The aspirator was turned on and 4mL of the 6M HNO3 was slowly added into the beaker. Observations were then recorded.
Cycle 2 began with removing the fume hood and adding 10mL of distilled water into the beaker. While stirring the solution, 6 M NaOH was then added in a dropwise manner into the solution until the red litmus paper was turned blue by a drop of the …show more content…
In a dropwise manner, no more than 9mL of 3 M H2SO4 was added. The resulting solution was left to cool to room temperature. Observations were then recorded. Cycle five began with adding 5mL of distilled water to reaction mixture. The 50mL beaker was then placed on top of a magnetic stir plate. A stir bar was put into the beaker and no more than 300mg of 20 mesh zinc was added too. After fifteen to twenty minutes, observations were recorded into the lab manual. The stir bar was removed from the beaker. The liquid left on top was disposed of into its proper waste container. 5mL of 6 M HCl was added into the beaker. Observations were recorded at the end of the reaction. During the copper recovery step, distilled water was used to rinse the remaining solids. A vacuum filtration was then set up. It was set up by clamping the filter flask to the ring stand and connecting it to the aspirator. A Büchner funnel was attach to the filter flask and a filter paper was placed into funnel. The water for the aspirator was turned on and the filter paper was then wetted. The content in the beaker was transferred to the funnel. The copper was then left to dry for several minutes. A final mass was recorded of copper after it was completely