Translate the following statements into chemical equations and then balance the
equations
(a) Chlorine gas burns in hydrogen gas to give hydrogen chloride
(b) Hydrogen sulphide gas burns in air to give water and sulphur dioxide
(c) Hydrogen gas combines with nitrogen to give ammonia, NH
(d) Sodium metal reacts with water to give sodium hydroxide and hydrogen
gas
(e) Aluminium metal replaces iron from ferric oxide Fe, O, giving aluminium
oxide and iron
Answers
Answer:
) Hydrogen gas combines with nitrogen to form ammonia.
H
2
(g)+N
2
(g)→NH
3
The balanced equation for this reaction can be written as:
3H
2
(g)+N
2
(g)→2NH
3
(b) Hydrogen sulphide gas burns in air to give water and sulphur dioxide.
H
2
S(g)+O
2
(g)→H
2
O+SO
2
The balanced equation for this reaction can be written as:
2H
2
S(g)+3O
2
(g)→2H
2
O+2SO
2
(c) Barium chloride reacts with aluminium sulphate to give aluminium chloride and a precipitate of barium sulphate.
BaCl
2
+Al
2
(SO
4
)
3
→AlCl
3
+BaSO
4
↓
The balanced equation for this reaction can be written as:
3BaCl
2
+Al
2
(SO
4
)
3
→2AlCl
3
+3BaSO
4
↓
(d) Potassium metal reacts with water to give potassium hydroxide and hydrogen gas.
K+H
2
O→KOH+H
2
The balanced equation for this reaction can be written as:
2K+2H
2
O→2KOH+H
2