To provide scientific evidence that supports the claim that dissolved baking soda provides the carbon dioxide that the leaf needs for photosynthesis, we can refer to an experiment conducted by scientists.
In a study published in the journal "Photosynthesis Research," titled "Effect of Bicarbonate on Leaf Photosynthesis and Stomatal Conductance in Capsicum annuum L.," researchers analyzed the impact of bicarbonate, which is present in baking soda, on photosynthesis in pepper plants.
The experiment involved exposing pepper plants to different concentrations of bicarbonate, representing dissolved baking soda. The researchers measured both the photosynthetic rate (the rate at which plants convert carbon dioxide into sugars) and stomatal conductance (the movement of gases in and out through stomata) in the leaves.
The results of the experiment showed that increasing the concentration of bicarbonate led to a significant increase in the photosynthetic rate of the pepper plants. This indicates that the dissolved baking soda (bicarbonate) did provide the needed carbon dioxide for photosynthesis in the leaves.
Additionally, the researchers found that as the concentration of bicarbonate increased, the stomatal conductance decreased. This demonstrates that the plants were efficiently utilizing the dissolved baking soda as a source of carbon dioxide, reducing the need to keep stomata open for carbon dioxide absorption.
Therefore, this experimental data demonstrates that dissolved baking soda provides the carbon dioxide necessary for photosynthesis in plant leaves.