Describe the chemical reaction of `CO_(2)` with
(a) lime water
(b) metals like sodium, potassium and calcium
( c) non-metals like carbon

Explanation

(a) Reaction with lime water `(Ca(OH)_(2))`: `CO_(2)` reacts with lime water that is `Ca(OH)_(2)` to form a milky white precipitate that is `CaCO_(3)`.
`Ca(OH)_(2)toCaCO_(3)darr`
When excess `CO_(2)` is passed through above solution, the presipitate dissolves due to the formation of `Ca(CHO_(3))_(2)`
`CaCO_(3)+H_(2)O+CO_(2)toCa(HCO_(3))_(2)`
(b) Reaction with metals: Metals like Na, K and Ca react with `CO_(2)` to form correponding metal carbonates whils Mg and AI give corresponding oxides.
`4Na+3CO_(2)to2Na_(2)CO_(3)+C`
`2Mg+CO_(2)to2MgO+C`
(c ) Reaction with non-metals : `CO_(2)` when reats with red hot coke reduced to CO , a very poisonous gas.
`C+underset(("Coke"))(CO_(2))overset(Delta)(to)2CO`