Ox, Reduc, and Redox

Question 1

State what is meant by the term ‘oxidation’

Answer 1

Addition of oxygen to a substance
Loss of electrons

Question 2

State what is meant by the term ‘reduction’

Answer 2

Removal of oxygen to a substance
Gain of electrons

Question 3

State what is meant by the term ‘disproportionation’

Answer 3

When atoms of the same element are oxidised and reduced simultaneously

Question 4

State what is meant by the term ‘oxidising agent’

Answer 4

Aids oxidation of another species by being reduced itself

Question 5

State what is meant by the term ‘reducing agent’

Answer 5

Aids the reduction of another species by being oxidised itself

Question 6

What are the 5 steps/rules for doing half equations?

Answer 6

1 - balance element of interest
2 - Balance any O’s with H2O
3 - Balance any H’s using H+
4 - Balance any charges using e-
5 - Check your Ox numbers

Question 7

What is the oxidation state for fluorine and other G7 atoms (except with F or O)?

Answer 7

-1

Question 8

What is the oxidation state for oxygen (except in peroxides)?

Answer 8

-2

Question 9

What is the oxidation state for hydrogen?

Answer 9

+1

Question 10

What is the oxidation state for hydrogen in metal hydrides?

Answer 10

-1

Question 11

What is the total of oxidation state in a compound?

Answer 11

0