Translate the following statements into chemical equations and then balance them.(a) Hydrogen gas combines with nitrogen to form ammonia.(b) Hydrogen sulphide gas burns in air to give water and sulpur dioxide.(c) Barium chloride reacts with aluminium sulphate to give aluminium chlorideand a precipitate of barium sulphate.(d) Potassium metal reacts with water to give potassium hydroxide and hydrogen
Question
Translate the following statements into chemical equations and then balance them.(a) Hydrogen gas combines with nitrogen to form ammonia.(b) Hydrogen sulphide gas burns in air to give water and sulpur dioxide.(c) Barium chloride reacts with aluminium sulphate to give aluminium chlorideand a precipitate of barium sulphate.(d) Potassium metal reacts with water to give potassium hydroxide and hydrogen
Solution
(a) The chemical equation for the reaction of hydrogen gas with nitrogen to form ammonia is:
H2 + N2 → NH3
Balancing this equation gives:
3H2 + N2 → 2NH3
(b) The chemical equation for the reaction of hydrogen sulphide gas with oxygen (from the air) to form water and sulphur dioxide is:
H2S + O2 → H2O + SO2
Balancing this equation gives:
2H2S + 3O2 → 2H2O + 2SO2
(c) The chemical equation for the reaction of barium chloride with aluminium sulphate to form aluminium chloride and barium sulphate is:
BaCl2 + Al2(SO4)3 → AlCl3 + BaSO4
Balancing this equation gives:
3BaCl2 + Al2(SO4)3 → 2AlCl3 + 3BaSO4
(d) The chemical equation for the reaction of potassium with water to form potassium hydroxide and hydrogen is:
K + H2O → KOH + H2
Balancing this equation gives:
2K + 2H2O → 2KOH + H2
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