1.7 redox

Question 1

Redox

Answer 1

Oxidation and reduction
occur in the same reaction.

Question 2

oxidation

Answer 2

Loss of electrons/Increase
in oxidation state.

Question 3

reduction

Answer 3

Gain of electrons/Decrease
in oxidation state.

Question 4

oxidising agent

Answer 4

electron acceptor

Question 5

reducing agent

Answer 5

electron donor

Question 6

disproportionation

Answer 6

Oxidation and reduction of
the same element in the
same reaction.

Question 7

oxidation state

Answer 7

The oxidation state of a particular atom in a compound or ion is a measure of the
number of electrons lost, gained or shared

Question 8

an oxidation process involves

Answer 8

An oxidation process involves
 the addition of oxygen
 the removal of hydrogen or
 the loss of electrons

Question 9

a reduction process envolves

Answer 9

A reduction process involves
 the removal of oxygen
 the addition of hydrogen or
 the gain of electrons

Question 10

oxidation is SORE
reduction is ROSE

Answer 10

Oxidation is SORE - supply (addition) of oxygen, removal (loss) of electrons (or
removal of hydrogen)
Reduction is ROSE – removal of oxygen, supply (gain) of electrons (or supply
(addition) of hydrogen).

Question 11

explaining redox in terms of oxidation state

Answer 11

 Zinc is oxidised from 0 to +2 (increase in oxidation state - oxidation).
 Copper is reduced from +2 to 0 (decrease in oxidation state - reduction).
 Redox is where oxidation and reduction occur in the same reacti

Question 12

oxidation state in systematic naming

Answer 12

FeSO4 iron(II) sulfate
FeCl3 iron(III) chloride
MnO2 manganese(IV) oxide
SnI4 tin(IV) iodide

Question 13

common name and systematic name

Answer 13

sodium hypochlorite is known as sodium chlorate(I)
sodium chlorate is known as sodium chlorate(V)
magnesium sulfate is known as magnesium sulfate(VI)
calcium sulfite is known as calcium sulfate(IV)
potassium permanganate is known as potassium manganate(VII)
sodium dichromate is known as sodium dichromate(VI)