Oxidation , Reduction and Redox equations 3.1.7

Question 1

What are reducing agents

Answer 1

Lose electrons and are oxidised themselves

Question 2

what are oxidising agents

Answer 2

gain electrons and are reduced themselves

Question 3

what’s the oxidation number for uncombined elements

Answer 3

0

Question 4

what is the oxidation number for hydrogen in hydrides

Answer 4

-1

Question 5

what’s the oxidation number for chlorine

Answer 5

-1
Except if in a compound with F and O it would have a positive value

Question 6

what’s the oxidation number of oxygen

Answer 6

-2
Except it is -1 in peroxides
+2 in OF2

Question 7

what is reduction in terms of oxidation number

Answer 7

Reduction is a decrease in oxidation number

Question 8

What is oxidation in terms of oxidation number

Answer 8

Oxidation is an increase in oxidation number

Question 9

what are the rules for balancing half equations

Answer 9

1) Balance any atoms apart from oxygen and hydrogen
2) Balance any oxygen with H2O
3) Balance any hydrogens with H+ ions
5) Balance charges with electrons (e-)