Aim To separate Oxygen (\(O_2\)) and Hydrogen (\(H_2\)) from Water (\(H_2O\))
Hypothesis We will be able to separate the elements and be able to see which is which by inspection \(\rightarrow\) Tests, pop, etc.
Equipment • 2 Test tubes • 2 Carbon rods • Glad Wrap • Blue Tac • Battery Pack • Wires • Water • Plastic cup • Retort stand • Calmps
Method 1. With the carbon rods, stick them in the bottom of the plastic cup. Clog the holes with blue tac so there is no leakage. Fill the cup with water so it covers the carbon (about half full). 2. Fill the 2 test tubes with water and cover them with glad wrap. 3. Hold the cup full of water with the retort stand and connect the wirs to the battery pack and the carbon rods. 4. With the test tubes, put each one onto the carbon rods, this requires breaking glad wrap. 5. Give the circuit energy, electrolysis will occur as the Hydrogen/Oxygen separate. You can test the experiment with the candle test and pop test.
Risk Assessment Electrocution:There is leakage with plenty of water around to ensure all holes are filled and electricity is clear from water. Check with the teacher whether or not it is safe to undergo the experiment. Cut from glass:Some of the beakers may be free hanging in the cup, they may fall and break. If this happens, clear the area, stop experiment and call for teacher.
Discussion This experiment was very time consuming, but truly rewarding. It consisted of logical reasoning and brain power, as well as extensive creativity (or a very simple google search). This experiment no doubt required us to work as a team, since without each others help, we would not have been able to perform it. In the end, I would have to say the validity of the experiment was very high, seeing as though we got twice as much hydrogen as we did oxygen, which was the expected result. To say that this was reliable wouldn't be quite as true, because amongst all the other groups, this experiment failed many times, causing us to believe it was quite unreliable.