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Unit 5:14
Redox equilibria AQA A2 chemistry
Question | Answer |
---|---|
Where does the positive electrode sit? | right |
Whats at the positive electrode? | the more positive subsance |
Where does the negative electrode sit? | left |
Whats at the negative electrode? | the more negative substance |
If a substance is more negative it is more likely to be? | Oxidised or be a reducing agent |
If a substance is more positive it is more likely to be? | reduced or be a oxidising agent |
How do you work out potential difference? | right-left |
What does oil rig stand for? | Oxidation is loss, reduction is gain |
What happens to the oxidation state if something is oxidised? | goes up |
What happens to the oxidation state if something is reduced? | goes down |
What are the standard conditions for measuring standard potential difference? | 1 moldm-3, 100kpa, 289k |
Whats standard electrode potential measured against? | H2 gas |
What is the platinum wire used for in fluid electrodes? | A surface for the reaction to take place on |
What must cancel out when making a balanced ionic equation? | electrons |