OXIDATION AND REDUCTION Flashcards
What does OIL RIG stand for?
O - Oxidation
I - Is
L - Loss
R - Reduction
I - Is
G - Gain
What is an oxidising agent?
An oxidising agent is a substance that accepts electrons.
What is a reducing agent?
An reducing agent is a substance which donates electrons.
What elements tend to be reducing agents?
Elements with low electronegativities tend to form ions by losing electrons and act as reducing agents. The strongest reducing agents are group one.
What are spectator ions?
The ions present which do not react in a redox reaction. These ions are present in the reactants and still present in the same amount when the products are formed.
What elements tend to be oxidising agents?
Elements with high electronegativities tend to form ions by gaining electrons and act as oxidising agents. The strongest oxidising agents are group seven.
On which side will electrons be shown in an oxidising half equations reactions?
Right hand side.
On which side will electrons be shown in an reduction half equation reactions?
Left hand side.
What are the three common molecules that act as oxidising agents?
- Hydrogen peroxide
- Acidified dichromate
- Acidified permanganate
Why do some oxidising agents like dichromate and permanganate have to be acidified?
As a source of H+ (aq) ions
Name a common reducing agent?
Carbon monoxide
What are common uses of oxidising agents?
- Kill fungi and bacteria
- inactivate viruses
- breaking down colours (Hair bleaching)
