SNC 2D
Chapter 4
Name:
Date:
Balancing Equations Assignment
A. Balance the following chemical equations:
1. KClO3
 KCl
2. Ag
+
Cl2
3. K
+
H2O 
 H2
+
O2

 AgCl
+
BaCl2  CuCl2
KOH
4. CuSO4
+
5. Zn
H3PO4 Zn3(PO4)2
+
H2

 N2
+
Cr2O3
+
6. (NH4)2Cr2O7
+

 CuCl2
AgCl
BaSO4
+
7. Cu(NO3)2
+
8. H2
+
N2

 NH3
9. Cu
+
AgNO3

 Ag
+
Cu(NO3)2
10.C25H52
+
O2

 CO2
+
H2O
11.Cu
+
H2O 
 CuO
+
H2
12.Al(NO3)3
+
NaOH Al(OH)3
+
NaNO3
13.KNO3

 KNO2
+
H2
+
+
H2SO4
15.O2
+
CS2
 CO2
16.Cu
+
Cl2
 CuCl2
17.Mg
+
N2
 Mg3N2
18.C
+
O2
 CO2
19.CO
+
O2
 CO2
20.K
+
H2O  KOH
AgNO3
O2
 Fe2(SO4)3
14.Fe
+
H2O
+
SO2
+
H2
21.NaOH
+
H2SO4
 Na2SO4
22.Al
+
H2SO4
 Al2(SO4)3
23.NH4NO2
 N2
+
24.NH3
+
CuO
 Cu
25.C2H6
+
O2
 H2O +
+
+
H2
N2
+
H2O
H2O
+
CO2
H2O
SNC 2D
Chapter 4
26.P4O10
+
H2O  H3PO4
27.SO2
+
O2
 SO3
28.CH4
+
O2
 CO2 +
H2O
29.AlCl3
+
K
 KCl +
Al
B. Write the formula for each word equation, and then write the balanced formula:
1. sodium hydroxide
2. iron
+

sodium oxide
oxygen
+
water

 iron (II) oxide
3. iron (III) sulfide + hydrogen chloride iron (III) chloride + hydrogen sulfide
4. aluminum nitrate + sulfuric acid

 aluminum sulfate + nitric acid
5. barium
+
water hydrogen
6. calcium
+
oxygen (gas)
calcium oxide
7. sulfur dioxide
8. phosphoric acid
+
+
barium hydroxide
oxygen (gas)

sulfur trioxide
+ sodium hydroxide  water +
9. copper (II) oxide + hydrogen (gas) 
 copper
10.magnesium +
sodium phosphate
+
sulfuric acid magnesium sulfate +
11.lead (II) nitrate + potassium iodide
lead (II) iodide +
water
hydrogen (gas)
potassium nitrate