Chemistry
Oxygen of the air is utilized for 'combustion' and for 'respiration'. Compare the two with a suitable example.
Air
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Answer
| Oxygen for combustion | Oxygen for respiration |
|---|---|
| Fuel [hydrocarbon] | Food substances [glucose] |
| Oxygen is needed | Oxygen is needed |
| Carbon dioxide is released | Carbon dioxide is released |
| Water vapour is formed | Water vapour is formed |
| Heat and light may be evolved | Heat is evolved |
| Rapid process at high temperature | Slow process at body temperature |
| CxHy + zO2 ⟶ xCO2 + y/2H2O + Energy | C6H12O6 + 6O2 ⟶ 6CO2 + 6H2O + Energy |
| Example : Fuels with oxygen burns to produce heat and light energy. | Example : Plants, animals and humans respire by taking in oxygen naturally. |
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