2.4 Redox

Question 1

What is a oxidising agent?

Answer 1

A oxidising agent is something that gains electrons so that something else can be oxidised. It is reduced.

Question 2

What is a reducing agent?

Answer 2

This is something that loses electrons so that something else can be reduced. It is oxidized.

Question 3

Join these two half equations

Cu -> Cu2+ + 2e-
1/2O2 + 2e- -> O2-

Answer 3

Cu + 1/2O2 -> Cu2+ + O2-

Question 4

What is the Oxidation state of Cl and F and what is the rule which Cl follows?

Answer 4

They are both -1 but if chlorine is in a compound with F and O it will have positive oxidation states.

Question 5

What is the oxidation state of a element on its own?

Answer 5

The oxidation state of a element on its own is 0