C2 - Electrolysis
- Created by: KassyArthur
- Created on: 12-03-17 10:08
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- C2 - Eletrolysis
- During electrolysis, the positively charged ions move to the negative electrode
- At the negative electrode, positively charged ions gain electrons (reduction)
- During electrolysis, the negatively charged ions move to the positive electrode
- At the positive electrode , negatively charged ions lose electrons (oxidation)
- During electrolysis, the positively charged ions move to the negative electrode
- Electrolysis
- When an ionic substance is melted or dissolved in water, the ions are free to move about within the liquid or sulution
- Electrolysis definition - The use of an electric current to break down compounds containing ions into their constituent elements
- During electrolysis, positively charged ions move to the negative electrode
- At the negative electrode, positively charged ions gain electrons (reduction)
- During electrolysis, negatively charged ions move to the positive ellectrode
- At the positive electrode, negatively charged ions lose electrons (oxidation)
- Electrolyte - The substance being broken down
- Electrode - made from solids that conduct electricity
- During electrolysis, positively charged ions move to the negative electrode
- Electrolysis is used to electroplate objects
- This may be for a verity of reasons and includes copper plating and silver plating
- If there is a mixture of ions, the products formed depend on the reactivity of the elements involved
- Higher
- Reactions at electrodes can be represented by half equations
- Aluminium - manufactured by the electrolysis of aluminium oxide and cryolite
- Aluminium forms at the negative electrode
- Oxygen forms at the positive electrode
- The positive electrode is made of carbon , which reacts with the oxygen to product carbon dioxide
- (The use of cryolite reduces some of the energy costs involved in extracting aluminium)
- (The aluminium oxide is dissolved in molten cryolite, an aluminium compound with a lower melting point than aluminium oxide)
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