3.11 - Electron Loss and Gain Flashcards
In terms of oxygen, what is oxidation?
The addition of oxygen
In terms of oxygen, what is reduction?
The removal of oxygen
In terms of hydrogen, what is oxidation?
The removal of hydrogen
In terms of hydrogen, what is reduction?
The addition of hydrogen
In the following equation, which compound is oxidised, and which is reduced?
Fe2O3 + 3CO -> 2Fe + 3CO2
Iron oxide is reduced, and carbon monoxide is oxidised
In terms of electrons, what is oxidation?
The removal of electrons
In terms of electrons, what is reduction?
The gain of electrons
What mnemonic helps to remember this?
Oxidation Is Loss of electrons Reduction Is Gain of electrons
What is an oxidising agent?
A species that oxidises another species by removing one or more electrons.
What happens to the oxidising agent itself in a reaction?
It is reduced
What is a reducing agent?
A species that reduces another species by adding one or more electrons.
What happens to the reducing agent itself in a reaction?
It is oxidised
What is disproportionation?
When a single element/compound is both oxidised and reduced in the same reaction
What does this result in?
Two different ions that come from the same initial element
