Question

Balance the following chemical reactions:
(a) Ca(OH)2 + HNO3 ⎯→ Ca(NO3)2 + H2O
(b) BaCl2 (aq) + H2SO4 (aq) ⎯→ BaSO4 (s) + HCl (aq)
(c) CuSO4 (aq) + Zn (s) ⎯→ ZnSO4 (aq) + Cu (s)
(d) H2S (g) + SO2 (g) ⎯→ S (s) + H2O (l)
(e) BaCl2 (aq) + Al2(SO4)3 (aq) ⎯→ AlCl3 (aq) + BaSO4 (s)
(f) Pb (NO3)2 (aq) + Fe2(SO4) (aq) ⎯→ Fe(NO3)3 (aq) + PbSO4 (s)
(g) Calcium hydroxide + carbon dioxide ⎯→ Calcium carbonate + water
(h) Aluminium + Copper (II) chloride ⎯→ Aluminium chloride + copper
(i) Calcium carbonate + hydrochloric acid ⎯→ Calcium chloride + water + carbon dioxide

Answer 1

Answer:

2. What type of story is it? (1) 3. What is the Moral of the story? (1)

Answer 2

Answer:

a) Ca(OH)2 + HNO3 ⎯→ Ca(NO3)2 + H2O (Already balanced)

b) BaCl2 (aq) + H2SO4 (aq) ⎯→ BaSO4 (s) + 2HCl (aq)

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

d) 2(H2S) (g) + SO2 (g) ⎯→ 3S (s) + 2H2O (l)

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

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

(PLEASE NOTE THAT THE FORMULA OF FERRUC SULPHATE WAS WRONG, I HAVE CORRECTED IT)

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

= Ca(OH)2 + CO2 —→ CaCO3 + H2O (Already balanced)

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

= 2Al + 3CuCl2 —→ 2AlCl3 + 3Cu

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

= CaCO3 + 2HCl —→ CaCl2 + H2O + CO2

(The underlined numbers are the required changes to be done in the equations in order to balance it.)

HOPE THIS HELPS....THANK YOU