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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 |