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Question
In an experiment, demonstrating the evolution of O2 in Hydrilla, sodium bicarbonate is added to water in the experimental setup. If all other conditions are favorable, what would be the end result?
Options:
A .  Amount of oxygen evolved decreases as carbon dioxide in water is absorbed by sodium bicarbonate.
B .  Amount of oxygen evolved increases as the availability of CO2 increases.
C .  Amount of oxygen evolved decreases as the availability of carbon dioxide increases.
D .  Amount of O2 evolved increases as CO2  in water is absorbed by sodium bicarbonate.
Answer: Option B
:
B
The addition of NaHCO3 to water in a given experimental set up causes the availability of more carbon dioxide for photosynthesis. Thus amount of O2 evolved increases.

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