Q. 324.0( 8 Votes )

Give one method for industrial preparation and one for laboratory preparation of CO and CO2 each.

Answer :

(a) Carbon dioxide

In the laboratory, CO2 can be prepared by the action of dilute hydrochloric acid on calcium carbonate. The reaction involved is as follows:-


CaCO3 + 2HCl(aq) CaCl2(aq) + CO2(g) + H2o


CO2 is commercially prepared by heating limestone. The reaction involved is:-


CaCO3 CaO + CO2


(b) Carbon monoxide


In the laboratory, CO is prepared by the dehydration of formic acid with conc. H2SO4 at 373k. the reaction involved is:-


HCOOH H2O + CO


CO is commercially prepared by [assing steam over hot coke. The temperature should be 473-1273K. the reaction is:-


C(s) + H2O CO(g) + H2(g)


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