Remember, strong bases can be just as toxic and corrosive as strong acids. Investigating photosynthesis www.ncbe.reading.ac.uk Photosynthesis and respiration Photosynthesis is the energy-acquiring process in which light energy is used to produce oxygen, glucose and water from water and carbon dioxide. How does the rate of photosynthesis change when sodium bicarbonate is added to a test tube containing a water plant such as elodea or anacharis? That’s precisely it. Unless you work under a $\mathrm{CO_2}$-free atmosphere, it would not be possible to produce sodium hydroxide not contaminated with carbonate. What drives it here is the fact that the carbon dioxide is gaseous and is driven off the water, into the atmosphere. Determination of rate of photosynthesis INTRODUCTION Photosynthesis is the major process by which light from the sun is captured by plants, algae and some bacteria to produce energy. Carbonic acid (H2CO3) is a weak acid and doesn't want to break apart. 3. When you put sodium carbonate (Na2CO3) in water it produces 2 sodium ions and one carbonate ion (CO3 with a charge of 2-).

The production of oxygen by photosynthesis is most easily seen in water plants such as Elodea and Cabomba. Imagine this, if you added too much NaOH to the acid, then the resulting solution would become strongly basic. What gas is supplied to the plant by the addition of the sodium bicarbonate? How does the rate of photosynthesis change when the light source is moved from a distance of 5 cm to 20 cm? Even though photosynthesis and carbonate precipitation may not be closely coupled, the alkalinization process in Eqs 1 and 2 may still result in carbonate precipitation on leaf surfaces (Figure (Figure1B) 1 B) or in the surrounding water because of increase of pH and CO 3 2-, though with a variable ratio to the fixation of CO 2 in organic matter. Explain your answer based on your observations. The reactions can be summarised in an equation: 12 H 2O + 6 CO 2 ——————a 6 O 2 + C 6H 12O 6 + 6 H 2O Note that this is a simplified equation, … Why should the level of photosynthesis increase because sodium bicarbonate was added to the water? It is a process in which light energy is converted into chemical energy which is then stored in sugars. 2.

How does the rate of photosynthesis change when sodium bicarbonate is added to the water? Concentration Of Hydrogen Carbonate On Rate Of Photosynthesis. Now, why is this not used industrially ?

Similarly to its use in baking, sodium bicarbonate is used together with a mild acid such as tartaric acid as the excipient in effervescent tablets: when such a tablet is dropped in a glass of water, the carbonate leaves the reaction medium as carbon dioxide gas ( HCO 3 − + H + → H 2 O + CO 2 ↑ or, more precisely, HCO 3 − + H 3 O + → 2 H 2 O + CO 2 ↑ ) leaving the medication dissolved in the water together with … photosynthesis?