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Question

Write the balanced chemical equations of the following reactions.

(a) Sodium hydroxide + sulphuric acid sodium sulphate + water

(b) Potassium bicarbonate + sulphuric acid  potassium sulphate + carbon dioxide + water

(c) Iron + sulphuric acid   ferrous sulphate + hydrogen.

(d) Chlorine + sulphur dioxide + water  sulphuric acid + hydrogen chloride

(e) Silver nitrate  silver + nitrogen dioxide + oxygen

(f) Copper + nitric acid  copper nitrate + nitric oxide + water

(g) Ammonia + oxygen  nitric oxide + water 

(h) Barium chloride + sulphuric acid  barium sulphate + hydrochloric acid

(i) Zinc sulphide + oxygen  zinc oxide + sulphur dioxide

(j) Aluminium carbide + water  aluminium hydroxide + methane

(k) Iron pyrites (FeS2) + oxygen  ferric oxide + sulphur dioxide

(l) Potassium permanganate + hydrochloric acid  potassium chloride + manganese chloride + chlorine + water

(m) Aluminium sulphate + sodium hydroxide  sodium sulphate + sodium meta aluminate + water.

(n) Aluminium + sodium hydroxide + water  sodium meta aluminate + hydrogen

(o) Potassium dichromate + sulphuric acid  potassium chloride + chromium chloride + water + chlorine.

(p) Sulphur + nitric acid  sulphuric acid + nitrogen dioxide + water.

(q) Sodium chloride + manganese dioxide + sulphuric acid  sodium hydrogen sulphate + manganese sulphate + water + chlorine.


Solution

(a) 2NaOH + H2SO4  2H2O + \Na_2SO_4\)

(b) 2KHCO3 + H2SO4  K2SO4 + 2CO2 + 2H2O 

(c) Fe + H2SO4 FeSO4 + H2

(d)  SO2 + Cl2 + 2HO  H2SO4 + HCl


(e) 2AgNO3  2Ag + 2NO2 + O2 

(f) 3Cu(s) + 8HNO3(aq)  3Cu(NO3)2(aq) + 4H2O(l)

(g) 4NH3 + 5O2  4NO + 6H2O

(h) BaCl2 + H2SO4  BaSO4 + 2HCl


(I) 2ZnS + 3O2  2ZnO + 2SO2 

(J)  Al4C3 + 12H2H2O  4Al(OH)3 + 3CH4 


(k)  4FeS2 + 11O2  2Fe2O3 + 8SO2


(l) 2KMnO4 + 16HCl   2MnCl2 + 5Cl2 + 2KCl + 8H2O 


(m) Al2(SO4)3 + 8NaOH  2NaAlO2 + 3Na2SO4 + 4HO

(n) 2Al + 2NaOH + 2H2O  2NaAlO2 + 3H2
 
(o) K2Cr2O7 + 14HCl  2KCl + 2CrCl3 + 7H2O + 3Cl2 

(p) S + HNO3   H2SO4 + NO2 + H2O

(q) NaCl + MnO2 + H2SO4 NaHCO3 + MnSO4 + H2O + Cl


Chemistry
Concise Chemistry
Standard IX

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