Q12 of 152 Page 18

Complete and balance the following equations:

(a) NaOH +....... Na2S04 + H20


(b) Ca(OH)2 +.... CaC03 + H20

(a) 2NaOH + H2S04 Na2S04 + 2H20

Sodium hydroxide reacts with Sulphuric acid to give Sodium sulphate and water.


(b) Ca(OH)2 + C02 CaC03 + H20


Calcium hydroxide reacts with carbon dioxide to give Calcium carbonate and water.



More from this chapter

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

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


(b) Phosphorus bums in oxygen to give phosphorus pentoxide.


(c) Carbon disulphide bums in air to give carbon dioxide and sulphur dioxide.


(d) Aluminium metal replaces iron from ferric oxide, Fe203, giving aluminium oxide and iron.


(e) Bi:uiurn chloride reacts with zinc sulphate to give zinc chloride and barium sulphate.

 11 Write the balanced chemical equations for the following reactions:

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


(b) Aluminium + Copper chloride Aluminium chloride + Copper

 13 Correct and balance the following equations:

(i) Ca + H20 CaOH + H


(ii) N + H NH3

 14 Write complete balanced equations for the following reactions:

(a) Calcium (solid) +Water (liquid) Calcium hydroxide (solution) +Hydrogen (gas)


(b) Sulphur dioxide (gas)+ Oxygen (gas)Sulphur trioxide (gas)