Materials:
- Copper sulfate solution (CuSO4)
- Two carbon electrodes (or platinum electrodes)
- A DC power source (such as a battery or power supply)
- A glass or plastic container for gas collection
- Connecting wires
- Safety goggles
- Gloves
Procedure:
Step 1: Setup:
- Connect one carbon electrode to the positive terminal (+) of the power source and the other carbon electrode to the negative terminal(-).
- Fill the glass or plastic container with a sufficient amount of copper sulfate solution to immerse the electrodes.
- Make sure the electrodes are not touching each other and are fully immersed in the solution.
Step 2: Gas Collection:
- Turn on the power source to initiate electrolysis.
- As electrolysis occurs, oxygen gas (O2) will be produced at the anode (positive electrode) due to the oxidation of water molecules.
- Hold the glass or plastic container upside down over the anode to collect the oxygen gas.
- Continue collecting the gas until you have an adequate sample.
Step 3: Disconnect Power and Observe:
- Once gas collection is complete, disconnect the power source.
- Observe the collected gas sample within the container.
- The gas should be oxygen, which is colorless and odorless.
Safety Precautions:
- Wear safety goggles and gloves during the experiment to protect yourself from potential splashes or chemical reactions.
- Ensure proper ventilation in the workspace to avoid the buildup of potentially harmful gases.
By following these steps, you can successfully collect a sample of oxygen gas at the anode during the electrolysis of copper sulfate.
