1. Video Tutorial on Electrolysis, Voltaic Celland Factors Affecting Discharge of Ionsduring Electrolysis. Prepared by Lawrence Kok http://lawrencekok.blogspot.com

2. Video on Standard Electrode Potential and Voltaic CellGalvanizing Iron with ZincExcellent Silver crystal formationElectrolysis of waterElectrolysis of waterElectrolysis of KI 3. Electrolytic Cell Vs Voltaic CellDifferences between electrolytic Cell and Voltaic CellSimilarity between both Cells Both Contain Electrolyte, Anode and Cathode Electrons flow from ANODE (OXIDATION) CATHODE ( REDUCTION) 4. Electrolytic CellVsVoltaic CellElectrolytic Cell molten Copper (II) ChlorideVoltaic Cell Zn/Cu half cell 5. Electrolytic CellVsVoltaic CellElectrolytic Cell molten Copper (II) ChlorideVoltaic Cell Zn/Cu half cellAnode (+ve) Oxidation) Cathode (-ve) (Reduction) Cathode (+ve)(Reduction)Anode (-ve) (Oxidation) 6. Electrolytic Cell using molten PbBr2Anion to Anode Cation to Cathode Electrolytic Cell using molten CaCI2Anion to AnodeCation to Cathode 7. Electrolytic Cell using molten PbBr2 Lead at CathodeBromine at Anode Anion to AnodeCation to Cathode Electrolytic Cell using molten CaCI2 Chlorine at Anode Calcium at CathodeAnion to AnodeCation to Cathode 8. Factors Affecting Discharge of Ions During Electrolysis Standard Electrode Potential of Different Metal Ions 9. Electrolysis of Aqueous Sodium Chloride Electrolysis of aqueous NaCIAnode (+ve) Cathode (-ve)Which anion will be Oxidised ?Which cation will be Reduced ? 10. Electrolysis of Aqueous Sodium Chloride Electrolysis of aqueous NaCIO2 at Anode H2 at CathodeAnode (+ve) Cathode (-ve)Which anion will be Oxidised ?Which cation will be Reduced ?OH - ion will be oxidised to O2 gas H+ ion will be reduced to H2 gas 11. Electrolysis of Aqueous Sodium IodideElectrolysis of aqueous Sodium Iodide (NaI)Anode (+ve)Cathode (-ve) Which anion will be Oxidised at Anode?Which cation will be Reduced at Cathode ? 12. Electrolysis of Aqueous Sodium Iodide Electrolysis of aqueous Sodium Iodide (NaI) Anode (+ve)Cathode (-ve)I2 at Anode H2 at Cathode Which anion will be Oxidised at Anode? Which cation will be Reduced at Cathode ? I - ion will be oxidised to I2 gasH+ ion will be reduced to H2 gas 13. Electrolysis of Aqueous Silver NitrateElectrolysis of aqueous Silver Nitrate (AgNO3)Cathode (-ve)Anode (+ve) Which anion will be Oxidised at Anode? Which cation will be Reduced at Cathode ? 14. Electrolysis of Aqueous Silver NitrateElectrolysis of aqueous Silver Nitrate (AgNO3)Cathode (-ve)Anode (+ve)Ag formedO2 formed Which anion will be Oxidised at Anode? Which cation will be Reduced at Cathode ? OH - ion will be oxidised to O2 gas Ag+ ion will be reduced to Ag metal 15. Electrolysis of Aqueous Copper (II) Chloride Electrolysis of Copper (II) ChlorideCathode (-ve)Anode (+ve)Which anion will be Oxidised at ANODE?Which cation will be Reduced at CATHODE? 16. Electrolysis of Aqueous Copper (II) ChlorideElectrolysis of Copper (II) Chloride Cathode (-ve)Anode (+ve)Oxygen at AnodeCopper at Cathode Which anion will be Oxidised at ANODE?Which cation will be Reduced at CATHODE? OH - ion will be oxidised to O2 gasCu2+ion will be reduced to Cu metal 17. Electrolysis of Aqueous Copper (II) ChlorideElectrolysis of Copper (II) Bromide Cathode (-ve) Anode (+ve)Which cation will be Reduced at CATHODE?Which anion will be Oxidised at ANODE? 18. Electrolysis of Aqueous Copper (II) ChlorideElectrolysis of Copper (II) Bromide Cathode (-ve) Anode (+ve) Bromine at AnodeCopper at CathodeWhich cation will be Reduced at CATHODE?Which anion will be Oxidised at ANODE?Conclusion: Cation to Cathode Gain electron (Reduction) More (+ve) E red will be preferred Anion to Anode Lose electron (Oxidation) More (+ve) E oxi will be preferred 19. Electrolysis of Aqueous Potassium Iodide Electrolysis of aqueous Potassium Iodide (KI)Cathode (-ve) Anode (+ve)Which anion will be Oxidised at Anode?Which cation will be Reduced at Cathode ? 20. Electrolysis of Aqueous Potassium IodideElectrolysis of aqueous Potassium Iodide (KI) Cathode (-ve) Anode (+ve)I2 at AnodeH2 at Cathode Which anion will be Oxidised at Anode?Which cation will be Reduced at Cathode ? I - ion will be oxidised to I2 gas H+ ion will be reduced to H2 gas 21. Electrolysis of Aqueous Potassium Sulphate Electrolysis of aqueous Potassium Sulphate (K2SO4) Cathode (-ve)Anode (+ve)Which anion will be Oxidised at Anode?Which cation will be Reduced at Cathode? 22. Electrolysis of Aqueous Potassium SulphateElectrolysis of aqueous Potassium Sulphate (K2SO4)Cathode (-ve)Anode (+ve)O2 at Anode H2 at Cathode Which anion will be Oxidised at Anode?Which cation will be Reduced at Cathode? OH - ion will be oxidised to O2 gas H+ ion will be reduced to H2 gasConclusion: Cation to Cathode Gain electron (Reduction) More (+ve) E red will be preferred Anion to Anode Lose electron (Oxidation) More (+ve) E oxi will be preferred 23. Electrolysis of Aqueous Sulphuric AcidElectrolysis of aqueous Sulphuric Acid (H2SO4)Cathode (-ve)Anode (+ve)Which anion will be Oxidised at Anode?Which cation will be Reduced at Cathode ? 24. Electrolysis of Aqueous Sulphuric AcidElectrolysis of aqueous Sulphuric Acid (H2SO4)Cathode (-ve)Anode (+ve)O2 at Anode H2 at CathodeWhich anion will be Oxidised at Anode?Which cation will be Reduced at Cathode ? OH - ion will be oxidised to O2 gasH+ ion will be reduced to H2 gasConclusion: Cation to Cathode Gain electron (Reduction) More (+ve) E red will be preferred Anion to Anode Lose electron (Oxidation) More (+ve) E oxi will be preferred 25. Factors Affecting Discharge of Ions During Electrolysis Concentration of Different Metal Ions 26. Electrolysis of DILUTED vs CONCENTRATED Copper (II) Chloride DILUTED Copper (II) ChlorideWhich anion will be Oxidised at ANODE?Which cation will be Reduced at CATHODE?Concentrated Copper (II) ChlorideWhich anion will be Oxidised at ANODE? Which cation will be Reduced at CATHODE? 27. Electrolysis of DILUTED vs CONCENTRATED Copper (II) Chloride DILUTED Copper (II) ChlorideOxygen at Anode Copper at CathodeWhich anion will be Oxidised at ANODE?Which cation will be Reduced at CATHODE?OH - ion will be oxidised to O2 gas Cu 2+ ion will be reduced to Cu metalConcentrated Copper (II) ChlorideChlorine at AnodeCopper at CathodeWhich anion will be Oxidised at ANODE? Which cation will be Reduced at CATHODE?CI - ion will be oxidised to CI2 gasCu 2+ ion will be reduced to Cu metal 28. Electrolysis of DILUTED vs CONCENTRATED Sodium ChlorideDILUTED Sodium ChlorideWhich anion will be Oxidised at ANODE?Which cation will be Reduced at CATHODE? Concentrated Sodium ChlorideWhich anion will be Oxidised at ANODE?Which cation will be Reduced at CATHODE? 29. Electrolysis of DILUTED vs CONCENTRATED Sodium ChlorideDILUTED Sodium ChlorideOxygen at AnodeHydrogen at CathodeWhich anion will be Oxidised at ANODE?Which cation will be Reduced at CATHODE?OH - ion will be oxidised to O2 gas H+ ion will be reduced to H2 gas Concentrated Sodium ChlorideChlorine at AnodeHydrogen at CathodeWhich anion will be Oxidised at ANODE?Which cation will be Reduced at CATHODE? CI - ion will be oxidised to CI2 gas H+ ion will be reduced to H2 gas 30. Factors Affecting Discharge of Ions During ElectrolysisTypes of Electrodes Used 31. Electrolysis of Copper (II) Chloride using different Electrodes Copper (II) Chloride with CARBON ELECTRODEWhich anion will be Oxidised at ANODE?Which cation will be Reduced at CATHODE? Copper (II) Chloride with COPPER ELECTRODE Which anion will be Oxidised at ANODE?Which cation will be Reduced at CATHODE? 32. Electrolysis of Copper (II) Chloride using different Electrodes Copper (II) Chloride with CARBON ELECTRODEOxygen at Anode Copper at CathodeWhich anion will be Oxidised at ANODE?Which cation will be Reduced at CATHODE? OH - ion will be oxidised to O2 gasCu 2+ ion will be reduced to Cu metal Copper (II) Chloride with COPPER ELECTRODECopper at Cathode Copper dissolve at Anode Which anion will be Oxidised at ANODE? Which cation will be Reduced at CATHODE?Cu 2+ ion will be reduced to Cu metalCopper Anode will oxidised to Cu 2+ ions 33. Electrolysis of Silver Nitrate using different Electrodes Silver Nitrate with CARBON ELECTRODEWhich anion will be Oxidised at ANODE?Which cation will be Reduced at CATHODE?Silver Nitrate with SILVER ELECTRODEWhich cation will be Reduced at CATHODE? Which anion will be Oxidised at ANODE? 34. Electrolysis of Silver Nitrate using different ElectrodesSilver Nitrate with CARBON ELECTRODEOxygen at AnodeSilver at Cathode Which anion will be Oxidised at ANODE?Which cation will be Reduced at CATHODE? OH - ion will be oxidised to O2 gas Ag+ ion will be reduced to Ag metal Silver Nitrate with SILVER ELECTRODESilver at Cathode Silver dissolve at AnodeWhich cation will be Reduced at CATHODE?Which anion will be Oxidised at ANODE? Ag+ ion will be reduced to Ag metal Silver Anode will oxidised to Ag+ ions 35. AcknowledgementsThanks to source of pictures and video used in this presentationThanks to Creative Commons for excellent contribution on licenseshttp://creativecommons.org/licenses/Prepared by Lawrence KokCheck out more video tutorials from my site and hope you enjoy this tutorialhttp://lawrencekok.blogspot.com