Q5 of 28 Page 14

Translate the following statements into chemical equations and then balance them:

(a) Hydrogen gas combines with nitrogen to form ammonia.


(b) Hydrogen sulphide gas bums in air to give water and sulphur dioxide.


(c) Barium chloride reacts with aluminium sulphate to give aluminium chloride and a precipitate to barium sulphate.


(d) Potassium metal reacts with water to give potassium hydroxide and hydrogen

(a) 3H2 (g) + N2 (g) → 2NH3 (g)

(b) 2H2S (g) + 3O2 (g) → 2H2O (l) + 2SO2 (g)


(c) 3BaCl2 (aq) + Al2(SO4)3 (aq) → 2AlCl3 (aq) + 3BaSO4 (s)


(d) 2K (s) + 2H2O (l) → 2KOH (aq) + H2 (g)


More from this chapter

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3

What happens when dilute hydrochloric acid is added to iron filings? Tick the correct answer.

 4

What is a balanced chemical equation? Why should chemical equations be balanced?

 6

Balance the following chemical equations:


(a) HNO3 + Ca(OH)2→ Ca(NO3)2 + H2O


(b) NaOH + H2SO4→ Na2SO4 + H2O


(c) NaCl + AgNO3→ AgCl + NaNO3


(d) BaCl2 + H2SO4→ BaSO4 + 2HCL

 7

Write the balanced chemical equations for the following reactions:

(a) Calcium hydroxide + Carbon dioxide → Calcium carbonate + Water


(b) Zinc + Silver nitrate → Zinc nitrate + Silver


(c) Aluminium + Copper chloride → Aluminium chloride + Copper


(d) Barium chloride + P. sulphate → Barium sulphate + Potassium chloride