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Redox

Oxidation and Reduction Definitions

QuestionAnswer
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
Created by: cbschemistry
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