Reactivity 3.2. - Electron Transfer Reactions

Question 1

What is oxidation (less specific definition)

Answer 1

Gain of oxygen or loss of hydrogen

Question 2

What is reduction (less specific definition)

Answer 2

Loss of oxygen or gain of hydrogen

Question 3

What is the more sophisticated definition of oxidation and reduction

Answer 3

Oxidation is the loss of electrons and reduction is the gain of electrons.

Useful mnemonic is: OIL RIG

Question 4

What is the oxidation state of free elements

Answer 4

0

Question 5

Relation between net charge on the species and the oxidation states of the atoms in the species.

Answer 5

The sum of the oxidation states of all that atoms in a species

must be equal to the net charge on the species.

Question 6

State the oxidation state of group 1 in compounds

Answer 6

+1

Question 7

State the oxidation state of fluorine in compounds

Answer 7

-1

Question 8

State the oxidation state of group 2 (an also Zn and Cd) in compounds

Answer 8

+2

Question 9

State the oxidation state of hydrogen in compounds

Answer 9

+1

Question 10

State the oxidation state of oxygen in compounds

Answer 10

-2

Question 11

State the oxidation state of group 7 in compounds

Answer 11

-1

Question 12

Define Oxidising Agent

Answer 12

The species which removes the electrons from another substance; it itself is reduced.

Question 13

Define Reducing Agent

Answer 13

The species which gives the electrons from another substance; it itself is oxidized.

Question 14

Draw a voltaic cell

Answer 14

Question 15

Draw an electrolytic cell

Answer 15