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

(b) Balance the following chemical equation.

$Mn{O}_2$ + HCl $⟶$ $MnC{l}_2$ + $C{l}_2$ + $H_{2}O$

(a) What is a balanced chemical equation ? Why should chemical equations be balanced ?

(b) Aluminium burns is chlorine to form aluminium chloride $\left(AlC{l}_3\right)$. Write a balanced chemical equation for this reation.

(c) Potassium metal reacts with water to give potassium hydroxide and hydrogen gas. Write a balanced chemical equation for this reaction.

Write a balanced chemical equation for each of the following :

1. Carbon disulphide burns in air to give carbon dioxide and sulphur dioxide.

2. Calcium hydride reacts with water to form calcium hydroxide and hydrogen gas.

3. Methyl alcohol burns in air to form carbon dioxide and water.

4. Liquid hydrogen peroxide decomposes to give water and oxygen gas.

5. Aluminium hydroxide reacts with sulphuric acid to give ammonium sulphate and water.

6. Aluminium sulphate solution reacts with sodium hydroxide to form a precipitate of aluminium hydroxide.

Balance the following chemical equation :
$Mn{O}_2+HCl\to MnC{l}_2+C{l}_2+H_{2}O$

Write balance chemical equation for the following reaction: (a) hydrochloric acid reacts with calcium hydroxide . (b) calcium hydroxide reacts with sulphuric acid