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The Effects of Different Concentrations of Sugar Solution on the Mass Change of Potatos and Apples

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Alyssa Diamantopoulos

on 4 January 2013

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Transcript of The Effects of Different Concentrations of Sugar Solution on the Mass Change of Potatos and Apples

Background Materials Saftey Procedure 6. Wait overnight to get your results.
7. Mass each potato and apple again
8. The sugar concentration that didn't change the mass of the potato or apple is the amount of sugar in the substance. In this lab we experimented with potatoes and apples to try to find the exact concentration of sugar solution in a piece of apple and piece of a potato. This lab uses osmosis, the diffusion of water, The water is escaping the apple or potato and is losing its mass when in a hypotonic solution, while other times the water is entering the potato or apple to increase the mass in a hypertonic solution. When the mass does not change that means the apple or potato is it an isotonic solution and the solutes are relatively the same. 1. Red Delicious apples
2. Yukon Gloden potatoes
3. twelve plastic cups
4. Graduated cylinder
5. Sugar solutions (.0 mol, .2 mol, .4 mol,
.6 mol, .8 mol, 1.0 mol)
6. electronic balance
7. spoon
8. peeler
9. knife
10. Apple cutter
11. goggles
12. apron -Make sure your wearing your goggles and an apron
-Make sure that you are careful with the knives and peeler and make sure not to cut yourself 1. Peel the skin off of an apple and a potato
2. Split and cut the apple and potato into 6 equal parts
3. Mass each piece of potato and apple.
4. Measure out 50 ml of each of the solutions (0, .2, .4, .6, .8, and 1.0) into 12 plastic cups. Make sure you label one cup potato and one apple and label the concentration.
5. Drop one apple onto each of the cups labeled with different concentrations of sugar and then drop one of the potatos into each of the other 6 cups of sugar solution. Procedure cont. The Effects of Different Concentrations of Sugar on the Change in Mass of Potatoes and Apples Graph Conclusion From this lab we can conclude that apples have a higher concentration of sugar than potatos. We found this because the isotonic environment for potatos was .4 mol. and the isotonic environment for apples was not able to be collected in this test. This means that the concentration of a red delicious apple is higher than 1.0 mol. In conclusion a Yukon golden potato has a concentration of .4 mol. while a red delicious has a concentration above 1.0 mol. For future test we could rise the range of concentrations and maybe go up to 2.0 mol. In this future experiment we may be able to find the exact sugar concentration of a red delicious apple. One error source that may have affected our results was that we broke some of the apples into two pieces in order to fit into the cup. This could have affected the final mass of the apple and could have changed our results. Also we may not have been exactly persistent when filling the cups with 50 ml. of water or sugar solution. Concentration Potato Apple I F %
Chng. 0 .2 .4 .6 .8 1.0 14.2 15.6 9.86% 14.4 15.3 6.25% 10.0 10.0 0% 9.6 8.5 -11.46% 9.4 7.8 -17.02% 11.8 9.5 -19.49% I F %
Chng. 13.1 14.1 7.63% 12.1 13.8 14.05% 8.0 9.4 17.5% 8.4 9.6 14.29% 15.1 16.9 11.92% 12.2 11.6 5.17%
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