Electrolysis

• Half-equation: 2H+ + 2e- → H2
• What gas is made at the positive electrode 


  Chlorine
• What gas is collected at the negative electrode 


  Hydrogen
• What solution is left in the container

  Sodium hydroxide
• Electrolysis


  The process of splitting up an ionic compound using electricity
• Electrolyte


  The liquid used in the process of electrolysis
• Electrode


  The conductor through which the electricity leaves or enters
• Cathode


  A negative electrode
• Anode


  A positive electrode
• a solution of sodium sulfate was electrolysed. What would be at the positive electrode?

  Oxygen- the anode
• A solution of sodium sulfafe was electrolysed. What will be at the negative electrode?

  hydrogen- the cathode
• What does panic stand for 


  Positive

  anode

  negative

  is

  cathode
• What does oilrig stand for 


  Oxidation

  is

  lost

  reduction

  is

  gained
• Explain why the sodium sulfate solution becomes more concentrated during the electrolysis process

  Releasing hydrogen and oxygen from the water, so the solution is not being diluted as much
• The positive carbon electrode has to be continually replaced during the process

  Oxygen reacts with Carbon to make carbon dioxide, which wears away the electrode