Concentration of Substrate

... se. Also the pushing of the oxygen would probably have been too weak to push the syringe enough to record the results. There was a choice between counting the number of bubbles released and the volume of oxygen released. I chose volume because it is more accurate as bubbles can easily vary in size and it is easier to record the volume than counting bubbles. 1g of the celery and 5cm of the Hydrogen Peroxide should be enough for this experiment to produce easily read results, which will also be accurate enough for me to see clearly which is best for reactions. Prediction: I would expect from this reaction that the quickest and most reacted concentration would be the 100%. I would then expect 75%, 50%, 25% and then the slowest to react would be the 10% concentration. I would expect 100% to react quickest because it has the most Hydrogen Peroxide molecules in it. With more of these molecules inside the solution, it is more likely that a collision will take place, molecules must collide in order to react. This means that a reaction is more likely to take place, in a shorter time, making the rate of reaction quicker. More collisions are needed because only one in every 10 to the 14 collisions lead to a successful reaction taking place. The more reactions that take place increases the amount of oxygen produced in the shortest time. The orders of reaction starting with the fastest are as follows: 100% 75% 50% 25% 10%

Results: The results I ...