Redox Reactions

Question 1

Define Redox Reactions

Answer 1

? When oxidation and reduction occur simultaneously

Question 2

Oxidation

Answer 2

Reducing Agents
Electron donors

OIL

Question 3

Reduction

Answer 3

Oxidising agent
Electron acceptors

RIG

Question 4

Rules for oxidation numbers

Answer 4

1. All uncombined elements have an oxidation number of zero
2. The oxidation numbers of elements in a compound add up to zero
3. The oxidation number of a monoatomic ion is equal to the ionic charge
4. In a polyatomic ion the sum of the individual oxidation numbers of the elements adds up to the charge on the ion

Grp 1 - +1 
Grp2 - +2 
Al - +3 
H - +1 ( hydrides -1) 
F - -1 
Cl,Br,I - -1 (oxygen and fluorides) 
O - -2 (peroxides and fluorine -1)