Question

spinach leaves are building first and then put in a sugar solution​

Answer 1

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conduct a simple experiment using spinach leaves to demonstrate that, in the presence of light and carbon dioxide

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Experiment: We will conduct a simple experiment using spinach leaves to demonstrate that, in the presence of light and carbon dioxide, leaf tissues produce gas bubbles. While we cannot prove in this experiment that the bubbles are oxygen without a gas probe, we can demonstrate, by use of a control, that the bubbles only form when the leaves are submerged in a sodium bicarbonate solution (which releases CO2) and not when they are submerged in pure water. We can also demonstrate that the bubbles only form in the presence of strong light, by moving the experiment into the dark and making further observations. Finally, we could experimentally vary the light intensity to demonstrate the effect of light intensity on the process.

When we dissolve baking soda (NaHCO3) in water, carbonic acid (H2CO3) and sodium hydroxide (NaOH) are formed. The carbonic acid then breaks down into water and carbon dioxide gas, which is why dissolving baking soda in water causes it to fizz.

NaHCO3 + H2O --> H2CO3 + NaOH

H2CO3 --> H2O + CO2 (gas)