Question

give the chemical formula of calcium carbonate and lime water.​

Answer 1

Answer:

(a) Calcium hydroxide Ca(OH)

2

.

(b) Calcium carbonate CaCO

3

.

These droplets were present in air as moisture which got condensed on the cooler walls of glass tumbler. This shows the presence of water vapour in air.

Explanation:

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Answer 2

Answer:

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. If excess CO2 is added: the following reaction takes place: CaCO3(s) + H2O(l) + CO2(g) → Ca(HCO3)

Explanation:

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