Translate the following statements into chemical equations and balance them.
(a) Hydrogen gas combines with nitrogen to form ammonia.
(b) Hydrogen sulphide gas burns in air to give water and sulphur dioxide.
(c) Barium chloride reacts with aluminium sulphate to give Aluminium chloride and a precipitate of barium sulphate.
(d) Potassium metal reacts with water to give potassium hydroxide and Hydrogen gas
Answers
Answer:
(a) Unbalanced: H2 + N2 → NH3
Balanced: 3H2 + N2 → 2NH3
(b) Unbalanced: H2S + O2 → H2O + SO2
Balanced: 2H2S + 3O2 → 2H2O + 2SO2
(c) Unbalanced:
BaCl2 + Al2(SO4)3 → AlCl3 + BaSO4
Balanced: 3BaCl2 + Al2(SO4)3 → 2AlCl3 + 3BaSO4
(d) Unbalanced: K + H2O → KOH + H2
Balanced: 2K + 2H2O → 2KOH + H2
Explanation:
i(a) Skeletal equation: H₂ (g) + N₂(g) →NH₃(g)
Balanced equation: 3H₂ (g)+ N₂(g) →2NH₃(g)
(b) Skeletal equation: H₂S (g) + O₂(g) → H₂O (l) + SO₂(g)
Balanced equation: 2H₂S(g) + 3O₂ (g) → 2H₂O(l) + 2SO₂(g)
(c) Skeletal equation: BaCl₂(aq) + Al₂SO₄(aq) → AlCl₃(aq) + BaSO₄(s)
Balanced equation: 3BaCl₂(aq) + Al₂(SO₄)₃(aq) → 2AlCl₃(aq) + 3BaSO₄(s)
(d) Skeletal equation: K(s) + H₂O(l) → KOH(aq) + H₂(g)
Balanced equation: 2K(s) + 2H₂O(l) → 2KOH(aq) + H₂(g)