Question

WRITE THE NAMES OF ATOMS PRESENT IN LIME, LIME WATER AND LIMESTONE

Answer 1

Answer:

An experiment commonly used to demonstrate the interaction of CO2 and Ca(OH)2 is as follows.

Hydrochloric acid and calcium carbonate in the left test tube.

Resultant carbon dioxide passed through limewater in the right tube, producing a milky solution due to precipitation of the insoluble suspension of calcium carbonate:

Ca(OH)2(aq) + CO2(g) → CaCO3(s) + H2O(l)

If excess CO2 is added: the following reaction takes place:

CaCO3(s) + H2O(l) + CO2(g) → Ca(HCO3)2(aq)

The milkiness disappears since calcium bicarbonate is water-soluble.

Answer 2

1. There is one Calcium atom and 1 oxygen atom.
2. Limewater may be prepared by mixing calcium hydroxide (Ca(OH)2) with water 
3. Limestone is composed of a basic structure of one atom of calcium, one atom of carbon and three atoms of oxygen.