Biology for IGCSE & O level - Plant Nutrition (Section 7 - No. 27)
What is the purpose of adding sodium hydrogencarbonate to water in the oxygen production experiment?
To provide additional light.
To increase the water temperature.
To provide a source of carbon dioxide.
To act as a catalyst.
Explanation
Sodium hydrogencarbonate increases the CO2 concentration for photosynthesis.
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