Post on 13-Jan-2016
Cu SO4
Mg
Let me think about it
Lets get together
Zn
Mg
SO4
Zn
SO4Fe
Pb
Cu
No wayGranny!!
SO4
Zn
CuSO4
You say you
need me!
How can you leave
me?
PbSO4
Disco Displacement
Mgmagnesium
+ CuSO4
Copper sulphate
= +
Mgmagnesium
+ ZnSO4 = +
Zn
zinc
+ FeSO4 = +
Cu
copper
+ PbSO4 = +
Zn
zinc
+ CuSO4 = +
Write the symbol and the word equation
Disco Displacement Mgmagnesium
+ CuSO4
Copper sulphate
= MgSO4
magnesium sulphate
+ Cu copper
Mgmagnesium
+ ZnSO4
Zinc sulphate
= MgSO4
magnesium sulphate
+ Zn
zinc
Zn
zinc
+ FeSO4
iron sulphate
= ZnSO4
zinc sulphate
+ Fe
iron
Cu
copper
+ PbSO4
lead sulphate
= No reaction
Zn
zinc
+ CuSO4
copper sulphate
= ZnSO4
zinc sulphate
+ Cucopper
Magnesium
copper+magnesium sulphate
copper sulphate
+magnesium
Mg + __SO4 ___SO4 + Cu
zinc+magnesium sulphate
zinc sulphate+magnesium
___ + ZnSO4 MgSO4 + ___
iron+magnesium sulphate
iron sulphate+magnesium
____ + __________ MgSO4 + Fe
Magnesium
copper+magnesium sulphate
copper sulphate
+magnesium
Mg + CuSO4 MgSO4 + Cu
zinc+magnesium sulphate
zinc sulphate+magnesium
Mg + ZnSO4 MgSO4 + Zn
iron+magnesium sulphate
iron sulphate+magnesium
Mg + FeSO4 MgSO4 + Fe
Zinc
magnesium sulphate
+Zinc
Zn + ____SO4 - -
_____+zinc sulphateiron sulphate+Zinc
_____ + __________ _________ + Fe
copper+_________
__________copper
sulphate+Zinc
_____ + _________ __________ + ___________
Zinc
No reactionmagnesium sulphate
+Zinc
Zn + MgSO4 - -
iron+zinc sulphateiron sulphate+Zinc
Zn + FeSO4 ZnSO4 + Fe
copper+zinc sulphatecopper sulphate
+Zinc
Zn + CuSO4 ZnSO4 + Cu
Thermit reaction
Aluminium + iron oxide = aluminium oxide + iron
Al + FeO = AlO + Fe
Displacement of oxides
• A more reactive metal can displace a less reactive one from a solution of one of its salts.
• Similar reactions take place with solid reactants such as the oxides. E.g.
iron+aluminium oxide
iron oxide+aluminium
• The more reactive aluminium wins the oxygen from the less reactive iron. This reaction gets so hot that the iron melts!
No reactionzinc oxide+iron
Fe + ZnO - -
copper+iron oxidecopper oxide
+iron
2Fe + 3CuO Fe2O3 + 3Cu
IronIron
• Iron is in the middle of the three in activity
copper+zinc oxidecopper oxide
+zinc
Zn + CuO ZnO Cu
iron+zinc oxideiron oxide+zinc
3Zn + 2Fe2O3 3ZnO + 2Fe
ZincZinc
• Zinc is the most reactive of the three metals.
No reactionzinc oxide+copper
Cu + ZnO - -
No reactioniron oxide+copper
Cu + Fe2O3 - -
CopperCopper
• Copper is low in the activity series and will not displace either of these metals
• Will it react: Yes or no?.
Potassium
Sodium
Calcium
Magnesium
Aluminium
Zinc
Iron
Lead
Copper
Silver
Gold
Reactants Reaction?
iron oxide magnesium
copper sulphate
zinc
potassium hydrochloric acid
gold iron chloride
calcium sodium chloride
calcium oxygen
Yes
Yes
Yes!!
No
No
Yes
Activity
CuSO4
ZnSO4
ZnSO4
ZnSO4
FeSO4
FeSO4
PbSO4
MgSO4
MgSO4
No reaction
Mg
Mg
Zn
Zn
Zn
Cu
Cu
Fe
Fe
+
+
+
+
+
+
+
+
+
=
=
=
=
=