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Question:

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

Answer:

Caron 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)  +  CO 2(g)   +  H2O (l)

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

CaCO3     CaO  + CO2 ↑

Caron monoxide

In the laboratory, CO is prepared by the dehydration of formic acid with conc. H2SO4, at 373 K. The reaction involved is as follows:


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