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chemistry > R3.2 - electron transfer reactions > Flashcards

R3.2 - electron transfer reactions Flashcards

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1
Q

What is oxidation?

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2
Q

What is reduction?

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3
Q

What are limitations of the oxidation states model?

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4
Q

What is the oxidation state of carbon in C3H8?

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5
Q

What is an oxidizing agent?

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6
Q

What are some examples of oxidizing agents?

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7
Q

What is a reducing agent?

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8
Q

What are some examples of reducing agents?

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9
Q

What can act as both reducing and oxidizing agents?

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10
Q

What is the role of half-equations?

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11
Q

What are the steps involved in writing a redox reaction?

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12
Q

What is a redox titration?

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13
Q

What is the equation for the iodine-thiosulfate titration?

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14
Q

What are the half-equations for the iodine-thiosulfate titration?

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15
Q

How does the iodine-thiosulfate titration work?

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16
Q

What is the equation for the titration with iron and manganese?

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17
Q

What are the half-equations for the titration with iron and manganese?

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18
Q

What is the order of the reactivity series?

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19
Q

Which non-metals are stronger oxidising agents?

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20
Q

Which metals are stronger reducing agents?

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21
Q

What happens when an acid reacts with a metal?

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22
Q

Why is H important in the reactivity series?

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23
Q

What are electrochemical cells?

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24
Q

What are voltaic cells?

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25
Q

What occurs at the anode and cathode of electrochemical cells?

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26
Q

What are electrolyctic cells?

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27
Q

How is the type of reaction different for voltaic and electrolyctic cells?

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28
Q

Where does oxidation occur for voltaic and electrolyctic cells?

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29
Q

Where does reduction occur for voltaic and electrolyctic cells?

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30
Q

What is the polarity of the anode and cathode at the voltaic cell?

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31
Q

What is the polarity of the anode and cathode at the electrolyctic cell?

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32
Q

What is a primary voltaic cell?

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33
Q

What is a galvanic cell?

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34
Q

What are electrodes?

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35
Q

What is a primary cell?

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36
Q

What happens when 2 half-cells are connected by an external wire and a salt bridge?

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37
Q

What must be complete in order for a reaction to occur?

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38
Q

What are the half-equations for the reaction zinc and copper?

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39
Q

What occurs at the anode and cathode for a reaction involving zinc and copper half cells?

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40
Q

What is the relationship between reactivity, build up of electrons and electrode potential?

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41
Q

What connections do the half-cells need in a voltaic cell?

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42
Q

What is the direction of flow for electrons?

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43
Q

What is a salt bridge?

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44
Q

What are the features of a cell diagram?

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45
Q

What are the polarities of the anode and cathode in a voltaic cell?

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46
Q

What can be used as a salt bridge?

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47
Q

What are the 5 rules for drawing a cell diagram?

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48
Q

What do the negative ions in the salt bridge do?

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49
Q

What do the positive ions in the salt bridge do?

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50
Q

How can a primary voltaic cell lose it’s battery?

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51
Q

How do anions migrate through the salt bridge?

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52
Q

How do cations migrate through the salt bridge?

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53
Q

How can half-cells produce electric potentials?

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54
Q

What is a secondary cell?

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55
Q

When can the system be reversed?

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56
Q

Why are lithium-ion batteries useful?

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57
Q

What electrolyte is used in a lithium-ion battery?

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58
Q

What problems are there with the lithium-ion battery?

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59
Q

How can the problems in a lithium-ion battery be resolved?

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60
Q

What are the half-equations for discharging in a lithium-ion battery?

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61
Q

What are the half-equations for recharging in a lithium-ion battery?

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62
Q

What happens at the anode and cathode in discharging?

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63
Q

What happens at the anode and cathode in recharging?

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64
Q

Why are hydrogen fuel cells useful?

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65
Q

What are the equations for a hydrogen fuel cell in an acidified environment?

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66
Q

What are the equations for a hydrogen fuel cell in an alkaline environment?

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67
Q

What are the pros and cons of general primary cells?

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68
Q

What are the pros and cons of primary fuel cells?

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69
Q

What are the pros of general secondary cells?

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70
Q

What are the pros and cons of a lead-acid secondary cell?

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71
Q

What are the pros and cons of a cadmium-nickel secondary cell?

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72
Q

What are the pros and cons of a lithium ion secondary cell?

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73
Q
  • What are electrolytic cells?
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74
Q

What is the polarity of the anode and cathode of an electrolytic cell?

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75
Q

What occurs at the anode and cathode of an electrolytic cell?

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76
Q

What are the half equations for the anode and cathode of an electrolytic cell?

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77
Q

How is electrolysis carried out in an industrial scale?

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78
Q

What are 2 examples of electrolysis used on an industrial scale?

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79
Q

What is an example of a common oxidising agent?

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80
Q

What colour is K2Cr2O7?

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81
Q

What is a reflux reaction?

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82
Q

What happens during the oxidation of primary alcohols?

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83
Q

What happens when ethanol undergoes oxidation?

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84
Q

How can ethanal be obtained?

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85
Q

What happens during the oxidation of a secondary alcohol?

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86
Q

What happens during the oxidation of a tertiary alcohol?

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87
Q

What are the colour changes for primary, secondary and tertiary alcohols?

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88
Q

What is the reagent and conditions for reduction reactions?

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89
Q

What happens in the reduction of a ketone and carboxylic acid?

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90
Q

What does reduction of unsaturated compounds do?

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91
Q

What are examples of unsaturated hydrocarbons?

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92
Q

What does saturated mean?

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93
Q

What does unsaturated mean?

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94
Q

What reactions can unsaturated compounds undergo?

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95
Q

What happens if propene is reduced?

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96
Q

What is hydrogenation?

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97
Q

What is an example of hydrogenation?

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98
Q

What is the relationship between saturation and melting point?

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99
Q
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chemistry (28 decks)

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