Electrochemistry- Term 1, Year 12

Description

Chemistry (Electrochemistry - Term 1) Mind Map on Electrochemistry- Term 1, Year 12, created by Valerie Shepherd on 16/03/2014.
Valerie Shepherd
Mind Map by Valerie Shepherd, updated more than 1 year ago
Valerie Shepherd
Created by Valerie Shepherd about 10 years ago
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Resource summary

Electrochemistry- Term 1, Year 12
  1. Electricity
    1. The flow of electrons
      1. Measured in Volts
      2. Electron transfer reactions/Redox
        1. Oxidation
          1. Loss of electrons
            1. Oxidising agent
              1. Electron acceptor
                1. Is reduced
              2. Reduction
                1. Gain of electrons
                  1. Reducing agent
                    1. Electron donor
                      1. Is oxidised
                  2. Oxidation Numbers
                    1. 1. Element = 0
                      1. 2. Monoatomic ion = 0
                        1. 3. Oxygen -2, peroxide -1
                          1. 4. Hydrogen +1, metal hydride -1
                            1. 5. Sum ON compound = 0
                              1. 6. Sum ON polyatmoic ion = charge
                                1. Increase indicates loss of electrons
                                  1. Decrease indicates gain of electrons
                                  2. Balancing Redox Equations
                                    1. Oxidation Number Change Method
                                      1. The Half Reaction Method
                                        1. Acidic solution
                                          1. Basic solution
                                        2. Galvanic/Voltaic Cell
                                          1. Salt bridge
                                            1. KCl - Potassium Chloride
                                            2. Electrodes
                                              1. Anode
                                                1. Cathode
                                                2. Electrolyte
                                                  1. Cell Potential
                                                    1. Also called ElectroMotive Force (emf)
                                                      1. Ecell = Reduction Potential + Oxidation Potential
                                                        1. Calculated under standard conditions
                                                          1. 25 degrees Celsius
                                                            1. 1 atm of pressure for all gases
                                                              1. 1M concentration for all ions
                                                          2. Corrosion
                                                            1. Rusting - Iron
                                                              1. 1. Iron atoms to Iron (II) ions
                                                                1. 2. Iron (II) ions to Iron (III) ions
                                                                2. Loss of electrons
                                                                  1. Dry corrosion
                                                                    1. Wet corrosion
                                                                      1. Preventatives
                                                                        1. Physical Protection
                                                                          1. Paint
                                                                            1. Oil or grease
                                                                              1. Plastic coating
                                                                                1. Tin plating
                                                                                  1. Galvanising
                                                                                    1. Electroplating
                                                                                      1. Cathodic Protection
                                                                                      2. Chemical Protection
                                                                                        1. Sacrificial Protection
                                                                                          1. Alloying
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