Question

How will you prove that formation of calcium carbonate is combination reaction.

Answer 1

2. DECOMPOSITION: AB → A + B Examples: 2 H2O → 2 H2 + O2 CaCO3 → CaO + CO2Decompositions are generally the opposite (reverse) of combination reactions, and they usually involve oxidation and reduction (but not in the last example). 3. SINGLE REPLACEMENT (also called DISPLACEMENT):

Answer 2

Explanation:

During formation of calcium carbonate,

Following reaction takes place ----

Ca(OH)2 + CO2 ----- CaCO3 + H2O

As, in this reaction, the main product formed is CaCO3 which is limestone.

And it is formed by the reaction of two substances, it is a combination reaction.

Hope it helps !