Types of Chemical Reactions
Single Displacement
Part 4
Single displacement reactions are chemical changes that involve an element and a
compound as reactant. One element displaces or replaces another element from a compound. So
in essence a ‘SWAPPING’ of elements occurs in these reactions.
A + BC  AC + B
Ex:
magnesium + silver nitrate  silver + magnesium nitrate
Mg + 2 AgNO3  2 Ag + Mg(NO3)2
(Metal element displaces a metal)
Ex:
bromine + calcium iodide  iodine + calcium bromide
Br2 + CaI2  I2 + CaBr2
(Non-metal element displaces a non-metal)
In general, element A will replace the element in the B position to form a new compound.
Double Displacement
Part 5
Double Displacement reactions occur when elements in different compounds displace each
other or exchange places. In essence we see a ‘SWAPPING’ of partners between each compound.
AB + CD  AD + CB
Ex:
lead (II) potassium iodide  lead (II) iodide + potassium nitrate
Pb(NO3)2 + 2KI  PbI2 + 2KNO3
Ex: potassium chloride + Magnesium hydroxide  potassium hydroxide + magnesium
chloride
2 KCl + 1 Mg(OH)2  2 KOH + 1 MgCl2
In general, these reactions begin with two IONIC compounds, where the metal elements swap
partners to form two new compounds.
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Types of Chemical Reaction Worksheet
Balance the reactions a to f and indicate which types of chemical reaction are being represented:
a) ____ NaBr + ____ Ca(OH)2  ___ CaBr2 + ____ NaOH
Reaction Type : ______________
b) ____ NH3+ ____ H2SO4  ____ (NH4)2SO4
Reaction Type : ______________
c) ____ C5H9O + ____ O2  ____ CO2 + ____ H2O
Reaction Type : ______________
d) ____ Pb + ____ H3PO4  ____ H2 + ____ Pb3(PO4)2
Reaction Type : ______________
e) ____ Li3N + ____ NH4NO3  ___ LiNO3 + ___ (NH4)3N
Reaction Type : ______________
f) Na3PO4 + 3 KOH  3 NaOH + K3PO4
Reaction Type _______________________
g) MgCl2 + Li2CO3  MgCO3 + 2 LiCl
Reaction Type _______________________
h) C6H12 + 9 O2  6 CO2 + 6 H2O
Reaction Type _______________________
i) Pb + FeSO4  PbSO4 + Fe
Reaction Type _______________________
j) CaCO3  CaO + CO2
Reaction Type _______________________
k) P4 + 3 O2  2 P2O3
Reaction Type _______________________
l) 2 RbNO3 + BeF2  Be(NO3)2 + 2 RbF
Reaction Type _______________________
m) 2 AgNO3 + Cu  Cu(NO3)2 + 2 Ag
Reaction Type _______________________
n) C3H6O + 4 O2  3 CO2 + 3 H2O
Reaction Type _______________________
o) 2 C5H5 + Fe  Fe(C5H5)2
Reaction Type _______________________
p) SeCl6 + O2  SeO2 + 3Cl2
Reaction Type _______________________
q) 2 MgI2 + Mn(SO3)2  2 MgSO3 + MnI4
Reaction Type _______________________
r) O3  O. + O2
Reaction Type _______________________
s) 2 NO2  2 O2 + N2
Reaction Type _______________________
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Predicting the products of chemical reactions
Predict the products of the following reactions:
1)
__ Ag + __CuSO4 
Type:___________________________
2)
__ NaI + __ CaCl2 
Type:___________________________
3)
__ O2 + __ H2 
Type:___________________________
4)
__ AgNO2 + __ BaSO4 
Type:___________________________
5)
__ HCN + __ CuSO4 
Type:___________________________
6)
__ H2O + __ AgI 
Type:___________________________
7)
__ LiBr + __ Co(SO3)2 
Type:___________________________
8)
__ LiNO3 + __Ag 
Type:___________________________
9)
__ N2 + __ O2 
Type:___________________________
10)
__ H2CO3 
Type:___________________________
11)
__ AlCl3 + __ Cs 
Type:___________________________
12)
__ Al(NO3)3 + __ Ga 
Type:___________________________
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Six Types of Chemical Reaction Worksheet Answers
Balance the following reactions and indicate which of the six types of chemical reaction are being
represented:
a)
2 NaBr + 1 Ca(OH)2  1 CaBr2 + 2 NaOH
Type of reaction: double displacement
b)
2 NH3+ 1 H2SO4  1 (NH4)2SO4
Type of reaction: synthesis
c)
4 C5H9O + 27 O2  20 CO2 + 18 H2O
Type of reaction: combustion
d)
3 Pb + 2 H3PO4  3 H2 + 1 Pb3(PO4)2
Type of reaction: single displacement
e)
1 Li3N + 3 NH4NO3  3 LiNO3 + 1 (NH4)3N
Type of reaction: double displacement
f)
3 HBr + 1 Al(OH)3  3 H2O + 1 AlBr3
Type of reaction: acid-base
Section 3: Predicting the products of chemical reactions
1)
2 Ag + 1 CuSO4  1 Ag2SO4 + 1 Cu
Type: Single Displacement
2)
2 NaI + 1 CaCl2  2 NaCl + 1 CaI2
Type: Double Displacement
3)
1 O2 + 1 H2  2 H2O
Type: Synthesis
4)
2 AgNO2 + 1 BaSO4  1 Ag2SO4 + 1 Ba(NO2)2
Type: Double Displacement
5)
2 HCN + 1 CuSO4  1 H2SO4 + 1 Cu(CN)2
Type: Double Displacement
6)
1 H2O + 1 AgI  1 HI + 1 AgOH
Type: Double Displacement
7)
4 LiBr + 1 Co(SO3)2  2 Li2SO3 + 1 CoBr4
Type: Double Displacement
8)
1 LiNO3 + 1 Ag  1 AgNO3 + 1 Li
Type: Single Displacement
9)
1 N2 + 2 O2  2 NO2
Type: Synthesis
10)
1 H2CO3  1 CO2 + 1 H2O
Type: Decomposition
11)
1 AlCl3 + 3 Cs  3 CsCl + 1 Al
Type: Single Displacement
12)
1 Al(NO3)3 + 1 Ga  1 Ga(NO3)3 + 1 Al
Type: Single Displacement
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13)
1 CH3COOH + 1 O2  1 CO2 + 2 H2O
Type: Combustion
14)
1 C4H8 + 6 O2  4 CO2 + 4 H2O
Type: Combustion
15)
2 KCl + 1 Mg(OH)2  2 KOH + 1 MgCl2
Type: Double Displacement
16)
1 Zn + 1 Au(NO2)2  1 Zn(NO2)2 + 1 Au
Type: Single Displacement
17)
1 BaS + 1 PtCl2  1 BaCl2 + 1 PtS
Type: Double Displacement
18)
2 Na2O  4 Na + 1 O2
Type: Decomposition
13)
__ CH3COOH + __ O2 
Type:___________________________
14)
__ C4H8 + __ O2 
Type:___________________________
15)
__ KCl + __ Mg(OH)2 
Type:___________________________
16)
__ Zn + __ Au(NO2)2 
Type:___________________________
17)
__ BaS + __ PtCl2 
Type:___________________________
18)
__ Na2O 
Type:___________________________
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