Chem T3 - Electrochemical cell
- Created by: Claudiacumberpatch
- Created on: 10-03-20 19:57
View mindmap
- Electrochemical cell
- Circuit made up of anode cathode, electrolyte, power source & wires that connect 2 electrodes set up depends on if electrolyte is a solution or molten ionic compound
- If electrolyte is a solution
- 1.) Get 2 inert (unreactive) electrodes (e.g. graphite)
- 2.) Clean surface of electrodes using sandpaper
- 3.) Don't touch surface of electrodes with hands as may transfer grease
- 4.) Place both electrodes in beaker filled with electrolyte
- 5.) Connect electrodes to power supply with crocodile clips & wires, when power supply turned on current will flow through cell
- If electrolyte's a molten ionic substance
- 1.) Put solid ionic substance (will become electrolyte) in crucible
- 2.) Heat crucible with Bunsen burner until solid's molten do this in fume cupboard to stop release toxic fumes into room
- 3.) Once solid molten dip 2 clean inert electrodes in electrolyte
- 4.) Connect electrodes to power supply with wires & clips current should flow through cell when power turned on
- Can put ammeter in cell to check working correctly
- Voltage of cell decreases as electrolysis continues & reactants get used up
Comments
No comments have yet been made