Electrolysis of Salt Solution

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  • Electrolysis of Salt Solution
    • Important Source of Chemicals
      • 2) Electrolyse the salt solution, this means passing an electric current through it.
      • Electrolysis causes chemical change, it splits the solution into Hydrogen, Chlorine and Sodium Hydroxide
    • Useful products
      • Sodium Hydroxide: 1) Its a very strong alkali and used widely in the chemical industry, 1) Soap, 2) Ceramics, 3) Organic Chemicals, 4) Paper pulp, 5) Oven cleaner, 6) Household bleach
      • Household bleach is made by reacting chlorine with sodium hydroxide
    • Large scale Electrolysis
      • 1) Large scale electrolysis needs a lot of energy. This often comes from burning fossil fuels, which releases Carbon Dioxide (pollutant) into the atmosphere and uses up resources
      • 2) Mercury is a toxic chemical used in many brine electrolysis plants
  • 1) Salt is also important for the chemical industry.
    • Important Source of Chemicals
      • 2) Electrolyse the salt solution, this means passing an electric current through it.
      • Electrolysis causes chemical change, it splits the solution into Hydrogen, Chlorine and Sodium Hydroxide
  • Chlorine used in: 1) Disinfectants 2) Killing Bacteria 3) Household Bleach 4) Plastics (PVC) 5) Hydrochloric Acid (HCl) 6) Insecticides
    • Useful products
      • Sodium Hydroxide: 1) Its a very strong alkali and used widely in the chemical industry, 1) Soap, 2) Ceramics, 3) Organic Chemicals, 4) Paper pulp, 5) Oven cleaner, 6) Household bleach
      • Household bleach is made by reacting chlorine with sodium hydroxide
  • Hydrogen: 1) Used to make ammonia, 2) Used to change oils into fats for making margarine, 3) Used as a fuel in fuel cells and for welding and metal cutting.
    • 3) Asbestos is often used in industrial electrolysis. Asbestos is a toxic chemical and can cause lung cancer
      • Large scale Electrolysis
        • 1) Large scale electrolysis needs a lot of energy. This often comes from burning fossil fuels, which releases Carbon Dioxide (pollutant) into the atmosphere and uses up resources
        • 2) Mercury is a toxic chemical used in many brine electrolysis plants

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