2. Write the formula and give a balanced chemical equation for the following: Aluminium + Oxygen -->Aluminium oxide Nitrogen+di-Hydrogen ---> Ammonia
potassium+ water --> Potassium hydroxide + hydrogen
Answers
Explanation:
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
Explanation:
1) Aluminium + Oxygen → Aluminium oxide
4 Al + 3O₂ → 2Al₂O₃
2) Nitrogen + di-Hydrogen → Ammonia
N₂ + 3H₂ → 2NH₃
3) potassium + water → Potassium hydroxide + hydrogen
2K + 2H₂O → 2KOH + H₂