Question 11.32 Give one method for industrial preparation and one for laboratory preparation of CO and CO2 each.
Class XI The p-Block Elements Page 325
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30
CARBON DIOXIDE:-
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In the laboratory, CO2 can be prepared by the action of dilute hydrochloric acid on calcium carbonate. This reaction involved is as follows:
CaCO3 + 2HCL --> CaCl2 + CO2 + H2O
CO2 is commercially prepared by heating limestone. This reaction involved as follows:
CaCO3. ∆ >CaO + CO2^
______ |
CARBON MONOXIDE:-
__________________
In the laboratory, CO is prepared by the dehydration of formic acid with conc. H2SO4,
at 373K . The reaction involved is as follows:
HCOOH. 373K. ^
______________> H2O + CO |
conc.H2SO4
CO is commercially prepared by passing steam over hot coke . the reaction involved is as follows:
C(s) + H2O(g) 473-1273K. CO(g) + H2(g)
_____________>. { water gas}
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In the laboratory, CO2 can be prepared by the action of dilute hydrochloric acid on calcium carbonate. This reaction involved is as follows:
CaCO3 + 2HCL --> CaCl2 + CO2 + H2O
CO2 is commercially prepared by heating limestone. This reaction involved as follows:
CaCO3. ∆ >CaO + CO2^
______ |
CARBON MONOXIDE:-
__________________
In the laboratory, CO is prepared by the dehydration of formic acid with conc. H2SO4,
at 373K . The reaction involved is as follows:
HCOOH. 373K. ^
______________> H2O + CO |
conc.H2SO4
CO is commercially prepared by passing steam over hot coke . the reaction involved is as follows:
C(s) + H2O(g) 473-1273K. CO(g) + H2(g)
_____________>. { water gas}
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26
Carbon monoxide (CO)
industrial preparation : carbon monoxide is formed by passing of steam over hot coke.
e.g., C + H2O ----> CO + H2 { at limited air and 473K - 1273K temperature }
Laboratory preparation : carbon monoxide is formed by dehydration of formic acid in the presence of conc.H2SO4.
e.g., HCOOH(formic acid) ----> CO + H2O { in the presence of conc.H2SO4}
Carbon dioxide
Industrial preparation:carbon dioxide is formed by heating of limestone.
CaCO3 -----> CaO + CO2
Laboratory preparation : Carbon dioxide is formed by the action of dil.HCl on CaCO3.
CaCO3 + 2HCl --->CaCl2 + CO2 + H2O
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