1.7 Redox Flashcards
Oxidation
Loss of electrons
Or
Increase in oxidation state
Reduction
Gain of electrons
Or
Decrease in oxidation state
Which elements have the same oxidation state in all compounds?
- All of group 1, group 2, and group 3
- Fluorine
Exceptions in oxidation state: Hydrogen
Metal hydrides -1
Exceptions in oxidation state: Oxygen
Peroxides -1
Bonded to F +2
Exceptions in oxidation state: Chlorine (Br and I)
Combined with oxygen +1 +3 +5 and +7
Oxo-anions
Ions containing an element and oxygen
Charge of nitrates
-1
Charge of chlorates
-1
Charge of iodates
-1
Charge of sulfates
-2
Charge of phosphates
-3
Oxidising agent
A species that accepts electrons
Reducing agent
A species that donates electrons
How can copper be extracted from copper sulfate?
Reduction with scrap iron