An Experiment On The Reaction Of Acid And Decanting Has On Copper

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Purpose:
It’s important for reactions in aqueous solutions to reach equilibrium, meaning that both products and reactants need to be present before continuing to the next reaction or next step. In this experiment, copper was changed through eight different reactions. Throughout the process, qualitative observations were recorded to see what effect each type of acid and decanting has on copper. All of these steps were successfully completed by using different acidic solutions and zinc to take copper through the cycle from copper solid to copper nitrate to copper hydroxide, to copper oxide, to copper II sulfate, and back to copper solid.
Procedure:
CHE 131 Experiment 8, General Chemistry I Lab, 131 Quarter 2014-2015, DePaul University. [Online] https://www.d2l.depaul.edu (March 10, 2015)
• Zinc was added till the solution was clear during the reduction.
• When washing the copper at the end, there was only one wash with water.
Data and Results:
The table below shows the qualitative date observed throughout the whole process of the copper cycle.
Table 1: Copper Cycle
Description Data Observed
Mass of Copper Wire 0.3165 g
Dissolution of Copper Copper starts to dissolve and bubbling occurs when nitric acid was added. The solution became green and the beaker started to become orange/brown as gas was being released. Solution then became light blue when washed with water.
Precipitation of Cupric Hydroxide The solution then became a dark blue color. The precipitate was more bulker

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