Question

What information will you get from the given reaction?

\[\ce{CaCO3_{(s)} ->[\Delta] CaO_{(s)} + CO2 \uparrow}\]

Answer 1

1. The type of chemical reaction is thermal decomposition.
2. When limestone is heated, calcium oxide and CO₂ are produced. When carbon dioxide gas is fed through freshly prepared lime water, insoluble calcium carbonate and water are produced. In this process, lime water becomes milky.
3. It is an endothermic reaction.