REDOX (2) Flashcards
1
Q
reduction agent charge
A
mostly negative
2
Q
oxidation number
A
signal redox reaction has occurred
3
Q
increase in oxidation number
A
oxidation
4
Q
decrease in oxidation number
A
reduction
5
Q
assigning the oxidation number
A
- draw Lewis structure of molecule - show e- shared equally between pair of atoms - free model
- redraw structure as ionic compounds - bond e- completely associated with most electronegative
if identical - e- shared equally
6
Q
find if increase or decrease in oxidation number
A
free model - ionic model
7
Q
atom in ionic model has more e- than free model
A
-ve oxidation number
8
Q
atom in ionic model has less e- than free model
A
+ve oxidation number
9
Q
workout if methane and oxygen are oxidised or reduced
CH4 + 2O2 -> CO2 + 2H2O
A
methane is oxidised
oxygen is reduced
