3.1.7 Redox

Question 1

What is an oxidising agent?

Answer 1

Element that is accepting the electrons

Question 2

What is a reducing agent?

Answer 2

Element that is donating the electrons

Question 3

What is the oxidation number in a pure element?

Answer 3

Zero

Question 4

What is the oxidation number for the element fluorine?

Answer 4

Always -1

Question 5

What is the oxidation number for the element oxygen?

Answer 5

-2 ( -1 in peroxides, and +2 when reacted with fluorine)

Question 6

What is the oxidation number for the elements Cl, Br, I?

Answer 6

-1 ( can be positive when bonded to F or O)

Question 7

What is the oxidation number for the element Hydrogen?

Answer 7

+1 ( can be -1 in metal hydrides)

Question 8

What is oxidation number of group 1 elements?

Answer 8

+1

Question 9

What is oxidation number of group 2 elements?

Answer 9

+2

Question 10

What is oxidation number of aluminium?

Answer 10

+3

Question 11

What do the oxidation numbers in a compound need to add up to?

Answer 11

Overall charge