8. Answer in detail I

What happens when carbon dioxide is passed through lime water? Write the equation for this reaction.

 

When carbon dioxide slightly passes through lime water, it forms a white precipitate (milky appearance milky) of calcium carbonatecalcium trioxidecalcium bicarbonate.

 

\(CO_2+X→Y+H_2O\)

 

X =   \(CaOH\)\(Ca(OH)_2\)\(CaO\)

Y = \(Ca(HCO_3)_2\)\(CaCO_3\)

 

When adding an excess amount of carbon dioxide through lime water, it forms a precipitate, and the precipitate disappears due to the formation of soluble calcium hydrogen carbonate \(Ca(HCO_3)_2\)\(CaCO_3\).