WHY IS CARBON PRESENT EVERYWHERE? WHAT IS CARBON CYCLE
Asked by Rajpreet Srivastav | 3rd Dec, 2013, 08:30: PM
Expert Answer:
Carbon cycle
The various processes by which the percentage proportion of carbon dioxide, CO2 in the atmosphere is kept constant constitute the carbon cycle. About 0.03% to 0.04% of carbon dioxide is present in the atmosphere.
- Carbon dioxide is produced in industries by heating of carbonates and bicarbonates and also by reacting carbonates and bicarbonates with acids.
Carbonates:
CaCO3(s) CaO(s) + CO2(g)
Bicarbonates:
2KHCO3(s) K2CO3(s) + H2O(g) + CO2(g)
Removal of carbon dioxide:
Carbon dioxide is used in the process of photosynthesis and is also absorbed by water, alkalis and limewater.
2KOH + CO2 → K2CO3 + H2O
Ca(OH)2 + CO2 → CaCO3 + H2O
(Milky)
Ca CO3 + CO2 + H2O → Ca(HCO3)2
Answered by Hanisha Vyas
| 4th Dec, 2013,
11:13: AM
Carbon cycle
The various processes by which the percentage proportion of carbon dioxide, CO2 in the atmosphere is kept constant constitute the carbon cycle. About 0.03% to 0.04% of carbon dioxide is present in the atmosphere.
- Carbon dioxide is produced in industries by heating of carbonates and bicarbonates and also by reacting carbonates and bicarbonates with acids.
Carbonates:
CaCO3(s) CaO(s) + CO2(g)
Bicarbonates:
2KHCO3(s) K2CO3(s) + H2O(g) + CO2(g)
Removal of carbon dioxide:
Carbon dioxide is used in the process of photosynthesis and is also absorbed by water, alkalis and limewater.
2KOH + CO2 → K2CO3 + H2O
Ca(OH)2 + CO2 → CaCO3 + H2O
(Milky)
Ca CO3 + CO2 + H2O → Ca(HCO3)2
Answered by Hanisha Vyas | 4th Dec, 2013, 11:13: AM
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