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Redox
Oxidation and Reduction Definitions
Question | Answer |
---|---|
Oxidation in terms of electron transfer: | Oxidation takes place when a substance loses electrons and becomes more positive |
Reduction in terms of electron transfer: | Reduction takes place when a substance gains electrons and becomes more negative |
Oxidising Agent | An oxididsing agent is a substance that brings about oxidation in other substances and is itself reduced |
Reducing Agent | A reducing agent is a substance that brings about reduction in other substances and is itself reduced |
Mnemonic device for Redox | OILRIG: Oxidation Is Loss, Reduction Is Gain |
Oxidation Number defintions | The oxidation number of an element is the charge which an atom of that element has or appears to have in a compound. |
Oxidation number of free elements | 0 |
Oxidation number of oxygen | -2, exceptions: Hydrogen Peroixide, (H2)2), OF2 |
Oxidation number of Hydrogen | -1 |