Electrolysis
- Created by: oscar_wills
- Created on: 01-02-19 13:17
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- Electrolysis
- Ions
- Cation (+)
- Anion (-)
- Electrodes
- Cathode (-)
- Anode (+)
- Experiment
- At the cathode
- hydrogen (from H + in water) is produced UNLESS the + ions in the ionic compound are from a metal less reactive than hydrogen
- if the metal is less reactive, it will be produced instead
- At the anode
- oxygen (from OHin water) will be produced UNLESS the ionic compound contains halide ions (Cl- , Br- , I - )
- if there are halide ions, the halogen will be produced instead (e.g. Cl2 )
- At the cathode
- Electrolysis of...
- Sodium chloride solution
- H + ions go to cathode, H2 (g) is produced (Na is more reactive than hydrogen)
- Clions go to anode, Cl2 (g) is produced (Cl- are halide ions)
- Copper (II) sulfate solution
- Cu+ ions go to cathode, Cu (s) is produced (Cu is less reactive than hydrogen)
- OHions go to anode, O2 (g) is produced (SO4 2- ions are not halide ions)
- Water acidified with sulfuric acid
- H + to cathode, H2 (g) is produced (these are the other ions present in sulfuric acid H2SO4 )
- OHto anode, O2 (g) is produced (SO4 2- ions are not halide ions)
- Sodium chloride solution
- OILRIG
- Oxidation
- Loss of Electrons
- Reduction
- Gain of Electrons
- Oxidation
- Half equations
- At the anode...
- Untitled
- At the cathode...
- X^+ + e^- -> X
- At the anode...
- Ions
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