Q24 of 152 Page 19

Aluminium hydroxide reacts with sulphuric acid to form aluminium sulphate and water. Write a balanced equation for this reaction.

2Al(0H)2 + 3H2S04Al2(S04)2 + 6H20

The reaction is balanced.



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22 Convey the following information in the form of a balanced chemical equation:

"An aqueous solution of ferrous sulphate reacts with an aqueous solution of sodium hydroxide to form a precipitate of ferrous hydroxide and sodium sulphate remains in solution."

 23 Write any two observations in an activity which may suggest that a chemical reaction has taken place. Give an example in support of your answer. 24 Balance the following chemical equation :

Mn02 + HCl MnCl2 + Cl2 + H20

 25 Write the balanced equations for the following reactions, and add the state symbols :

(a) Magnesium carbonate reacts with hydrochloric acid to produce magnesium chloride, carbon dioxide and water.


(b) Sodium hydroxide reacts with sulphuric acid to produce sodium sulphate and water.