Question

Write the observation of the following
1.Calcium Carbonate is thermally decomposed.
2.Acidified water is electrolysed

Answer 1

Calcium carbonate is strongly heated until it undergoes thermal decomposition to form calcium oxide and carbon dioxide. The c alcium oxide (unslaked lime) is dissolved in water to form calcium hydroxide (limewater) . Bubbling carbon dioxide through this forms a milky suspension of calcium carbonate.