Electrochemistry · Grade 11
Electrolysis of copper sulfate
ChemAI · Worksheet
NameClassDate
Aim
Inert electrodes: what forms at each electrode?
Before you start: what do you predict will happen? Why?
What you do
| Step | What I observed | |
|---|---|---|
| 1 | Press “Electrodes” to switch on the current. Tip: speed ×5. | |
| 2 | Watch the cathode (−): what is the brown-pink coating? | |
| 3 | Test the gas at the anode (+) with a glowing splint. | |
| 4 | Turn on the pH meter: why does the solution become acidic? |
Questions
- Write a word or symbol equation for one reaction you observed.
- Explain your most important observation using particles, ions or energy.
- Was your prediction right? What would you change to get a more reliable result?