Chemical Clues What solution would you use in a chemica scrubber to remove carbo

Question

Chemical Clues What solution would you use in a chemica scrubber to remove carbon dioxide 2 Photosynthesis converts carbon dioxide and water to carbohydrates and oxygen gas, while metabolism is the process by which carbohydrates react with oxygen to form carbon dioxide and water. Using glucose CH) to represent carbohydrates, write equations for these two processes. 3. Why was diffusion of O2 from Biosphere I to the outside world not considered a possible cause for the 4. 5. What are the factors to consider in choosing a planet on which to build a structure like Biosphere II depletion in oxygen? Carbonic acid is a diprotic acid. Write equations for the stepwise ionization of the acid in water.

Explanation / Answer

Ans. 2. Photosynthesis: 6 CO2 + 6 H2O -----------> C6H12O6 + 6 O2

Metabolism: C6H12O6 + 6 O2 -----------> 6 CO2 + 6 H2O

Principally photosynthesis is the reverse reaction of metabolism/ aerobic respiration.

#4. First protonation:           H2CO3 ------------> HCO3- + H+

Second protonation:            HCO3- ------------> CO32- + H+

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