Question

41. Balance the following equation:
(i) MnO2 + HCl → MnCl2 + Cl2 + H2O
(ii) Na + O2 → Na20
(iii) H2O2 → H2O + O2
(iv) Mg(OH)2 + HCI — MgCl2 + H2O
(v) Fe + O2 → Fe2O3
(vi) Al(OH)3 → Al2O3 + H2O
(vii) NH3 + CuO → Cu + N2 + H20
(viii) Al2(SO4)3 + NaOH → Al(OH)3 + Na2SO4
(ix) HNO3 + Ca(OH)2 → Ca(NO3)2 + H2O
(x) NaOH + H2SO4 → Na2SO4 + H2O
(xi) BaCl2 + H2SO4 → BaSO4 + HCI
(xii) Calcium hydroxide + Carbon dioxide → Calcium carbonate +
Water
(xiii) Aluminium + Copper chloride → Aluminium chloride + Copper
(xiv) Calcium + Water → Calcium hydroxide + Hydrogen
(xv) Sulphur dioxide + Oxygen → Sulphur trioxide
(xvi) MnO2 + HCl → MnCl2 + Cl2 + H2O


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Answer 1

Explanation:

1)MnO2+4HCL-Mncl2 +Cl2+2H2O

2)4Na+O2 -2Na2O

3) 2H2O2 -2H2o +O2

4)Mg(OH)2 +2HCl -MgCl2+2H2O

5)4Fe+3O2-2Fe2O3

Hope this helps you

Answer 2

Answer: a. MnO₂ + 4HCl → MnCl₂ + Cl₂ + 2H₂O

b. 2Na + 1/2O₂ → Na₂O

c. 2H₂O₂ → 2H₂O + O₂

d. Mg(OH)₂ + 2HCI → MgCl₂ + 2H₂O

e. 4Fe + 3O₂ → 2Fe₂O₃

f. 2Al(OH)₃ → Al₂O₃ + 3H₂O

g. 2NH₃ + 3CuO → 3Cu + N₂ + 3H₂O

h. Al₂(SO₄)₃ + 6NaOH → 2Al(OH)₃ + 3Na₂SO₄

i. 2HNO₃ + Ca(OH)₂ → Ca(NO₃)₂ + 2H₂O

j. 2NaOH + H₂SO₄ → Na₂SO₄ + 2H₂O

k. BaCl₂ + H₂SO₄ → BaSO₄ + 2HCI

l. Ca(OH)₂ + CO₂ → CaCO₃ + H₂O   (Already Balanced)

m. Al + 3CuCl₂ → 2AlCl₃ + 3Cu

n. Ca + 2H₂O → Ca(OH)₂ + H₂↑

o. 3SO₂ + 3/2O₂ → 3SO₃

p. MnO₂ + 4HCl → MnCl₂ + Cl₂ + 2H₂O