Redox

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What three things define oxidation?
Loss of electrons, gain of oxygen and loss of hydrogen
1 of 13
What three things define reduction?
Gain of electrons, loss of oxygen and gain of hydrogen
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What acronym helps us to remember redox rules?
OILRIG
3 of 13
What is an oxidation state?
Tells you the total number of electrons it has donated or accepted
4 of 13
Uncombined elements have what oxidation state
0
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What is the oxidation state of a simple monatomic ion?
Same as its charge i.e Na+ = 1
6 of 13
What is the oxidation state of a compound ion?
Equal to the ion charge i.e SO4 2- = 2-
7 of 13
Combined oxygen is always what oxidation state ?
-2
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When is oxygen not -2?
When it is in a peroxide = -1
9 of 13
Combined hydrogen has what oxidation state?
+1
10 of 13
When is hydrogen not +1?
In metal hydrides where it is -1
11 of 13
What is an oxidising agent ?
A chemical that accepts electrons and gets reduced
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What is a reducing agent?
A chemical that donates electrons and gets oxidised
13 of 13

Other cards in this set

Card 2

Front

What three things define reduction?

Back

Gain of electrons, loss of oxygen and gain of hydrogen

Card 3

Front

What acronym helps us to remember redox rules?

Back

Preview of the front of card 3

Card 4

Front

What is an oxidation state?

Back

Preview of the front of card 4

Card 5

Front

Uncombined elements have what oxidation state

Back

Preview of the front of card 5
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