Effect Of Sucrose Concentration On Osmosis

VII. Conclusion
The hypothesis that if a potato is placed in a tube with different sucrose concentrations then the tube with the lowest concentration of sucrose will expand the potato the most because the water will move into the potato to even out the concentration levels of the sucrose/ water ratio inside and outside of the potato was supported by the data. The data shows that the potato submerged in the lowest concentration of the sucrose water solution had the greatest percent change in mass at 15.2% for 0% concentration. Overall, the higher the concentration of the solution, the lower the percent change in mass. When the solution concentration is 2.5%, the percent change in mass is 6.2%. At 5% concentration, the percent change in mass is 2.6%. When the concentration is 7.5%, the change in mass is 1.2%. At 10% the change in mass starts to become negative, meaning that the end mass is lower than the start mass, the change in mass at this point is -3.1%. When the concentration is 15% the change in mass is -20.4%, and at a 20% concentration the change in mass is -30.5%.This data is reliable because other data collected by classmates doing the same experiment with white potatoes got similar results. When each group’s set of data and the average is graphed with a best fit line, the data from this experiment lines up very closely to the best fit line of the averages. When the concentration of the solution is 0% the percent change for this experiment is 15.2% and the average is
The potato has a sucrose percentage of about 8%. In this experiment, the change in mass decreased from 1.2% to -3.1% where it was losing mass between the concentrations of 7.5% and 10%. This means that somewhere between 7.5% and 10% the solution becomes hypertonic to the potato, and so water starts to leave the potato. This would be the sucrose percentage. On the graph “The Group Average Effect of Sucrose Solution Concentration on the Percent Change in Mass in White