Question

write down the equation of the chemical reaction taking place between water and carbon dioxide in the experiment of preparation of carbon dioxide

Answer 1

mgco3 + H2so4 gives as Mgso4 +co2+HaI

Answer 2

let me give a brief description about carbon as follows:-
carbon is a very important element,we all know that its atomic no is 6.it has 4 electron in outer valence shell.
so you are confused in its valency
let me tell you that it dos not show the valency of +4 or -4.
in spite ,it shares atom mutually.
due to this tetracovalency it can form a large no of compounds with hydrogen ,oxygen,sulphur halogens(chlorine,bromine,iodine atoms)nitrogen sodium metal etc.
Also carbons shows property of catenation ,an important property about your query.
this property allows carbon to form chain ,rings and branched chains,with other carbon atoms, again forming a very large no of compounds.
the suitable size of carbon atom provide these special character to it.

so this is due to this that carbon forms a large no of compounds that outnumbers the compounds form by other atoms,so carbon is very important and in fact it is studied under a separate branch of chemistry........the organic chemistry.
wish you enjoyed this:-)