Balance the following chemical reactions:

08/04/2023 WNA24 84 Views 0 Comments

Balance the following chemical reactions:

(a) Ca(OH)2 + HNO3 ⎯→ Ca(NO3)2 + H2O.

Ans: – Ca(OH)2 + 2HNO3 ⎯→ Ca(NO3)2 + 2H2O.

(b) BaCl2 (aq) + H2SO4 (aq) ⎯→ BaSO4 (s) + HCl (aq).

Ans: – BaCl2 + H2SO4 ⎯→ BaSO4 + 2HCl.

(c) CuSO4 (aq) + Zn (s) ⎯→ ZnSO4 (aq) + Cu (s).

Ans: – CuSO4 + Zn ⎯→ ZnSO4 + Cu.

(d) H2S (g) + SO2 (g) ⎯→ S (s) + H2O (l).

Ans: – H2S + SO2 ⎯→ 2S + H2O.

(e) BaCl2 (aq) + Al2(SO4)3 (aq) ⎯→ AlCl3 (aq) + BaSO4 (s).

Ans: – 3BaCl2 + Al2(SO4)3  2AlCl3 + 3BaSO4.

(f) Pb (NO3)2 (aq) + Fe2(SO4) 3(aq) ⎯→ Fe(NO3)3 (aq) + PbSO4 (s).

Ans: – 3Pb(NO3)2 + Fe2(SO4)3  2Fe(NO3)3 + 3PbSO4

(g) Calcium hydroxide + carbon dioxide ⎯→ Calcium carbonate + water.

Ans: – Ca(OH)2 + CO2 ⎯→ CaCO3 + H2O.

(h) Aluminium + Copper (II) chloride ⎯→ Aluminium chloride + copper.

Ans: – Al + 3CuCl2 ⎯→ AlCl3 + 3Cu.

(i) Calcium carbonate + hydrochloric acid ⎯→ Calcium chloride + water + carbon dioxide.

Ans: – CaCO3 + 2 HClCaCl2 + H2O + CO2.