Electrolysis

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AQA GCSE Chemistry Unit 2: Electrolysis
Joe Harmes
Mind Map by Joe Harmes, updated more than 1 year ago More Less
jroach8989
Created by jroach8989 over 9 years ago
Joe Harmes
Copied by Joe Harmes over 7 years ago
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Resource summary

Electrolysis
  1. Lead Brodmide
    1. Positive Electrode
      1. Oxidation
        1. Bromine produced
          1. 2Br- 2e- ----> Br2
        2. Negative Electrode
          1. Reduction
            1. Lead Produced
              1. Pb2+ +2e- ----> Pb
            2. Must be molten
            3. Sodium Chloride Solution
              1. Positive electrode
                1. Oxidation
                  1. Chlorine
                    1. Bleach products
                    2. 2Cl- -2e- ----> 2Cl
                  2. Negative electrode
                    1. Reduction
                      1. Hydrogen
                        1. Fuel for cars
                        2. 2H+ + 2e- ----> H2
                      2. Sodium Hydroxide
                        1. More reactive sodium and hydrogen ions left behind
                          1. Sodium Hydroxide left in solution
                        2. Aluminum
                          1. Crycolite
                            1. Lower temperature and costs
                            2. Bauxite
                              1. Aluminium Compound
                                1. Mined and purified to white powder
                                  1. Aluminium Oxide
                                  2. Negative Electode
                                    1. Aluminium
                                      1. Al3+ +3e- ---->Al
                                      2. Positive Electrode
                                        1. Oxygen
                                          1. Reacts with carbon in electrode
                                            1. Carbon Dioxide
                                          2. 2O2- -4e- ----> O2
                                        2. OIL RIG
                                          1. Oxidation Is Loss
                                            1. Reduction Is Gain
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