Balancing chemical equations
Balance the following equations:
1.
H2
+
Cl2
HCl
2.
N2
+
H2
NH3
3.
Al
+
Cl2
AlCl3
4.
Na
+
O2
Na2O
5.
Fe
+
O2
Fe2O3
6.
Al
+
O2
Al2O3
7.
K2O
+
H2O
KOH
8.
Al
+
CuO
Al2O3
+
Cu
H2O2
H2O
+
O2
9.
10.
H2SO4
+
NaOH
Na2SO4
+
H2O
11.
NaOH
+
H3PO4
Na3PO4
+
H2O
12.
CH3CH2OH +
O2
CO2
+
H2O
13.
Mg
+
P4
Mg3P2
14.
CO2
+
H2O
C6H12O6
+
O2
Now use the “Balancing chemical equations” resource at
the eChalk website to check your answers.
Worksheet to complement eChalk resource:
“Balancing chemical equations”
http://www.eChalk.co.uk
Balancing chemical equations (answers)
Balance the following equations:
Cl2
2 HCl
3
H2
2 NH
3
Cl2
2 AlCl
O2
2 Na O
1.
H2
+
2.
N2
+
3.
2 Al
+
4.
4 Na
+
5.
4 Fe
+
3O
6.
4 Al
+
3
7.
8.
K2O
2 Al
+
+
H2SO4
+
11.
3 NaOH
+
CH3CH2OH +
13.
6 Mg
14.
6 CO
2
O2
2 Al O
H2O
2 KOH
CuO
Al2O3
2
+
2
2
2
3
2HO
2
+
3 Cu
+
O2
Na2SO4
+
2HO
H3PO4
Na3PO4
+
3HO
+
3HO
+
6O
2
P4
6
3
NaOH
3O
+
2
2 Fe O
2
10.
3
2
2H O
9.
12.
3
3
H2O
2 CO
2
2
2
2
2 Mg P
3
2
C6H12O6
2
Now use the “Balancing chemical equations” resource at
the eChalk website to check your answers.
Worksheet to complement eChalk resource:
“Balancing chemical equations”
http://www.eChalk.co.uk