The Effect Of Concentration On Osmosis

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Discussion 1-Describe the pattern of results by the graph you have drawn. There was no change in length at 0%, the potato cylinder stayed 40 mm, however at 3% the potato decreased by 24mm to become 36 mm. At 5%, the potato’s length decreased by 3 mm to become 37 mm in length. Therefore, there is a negative correlation in the graph. At 0%, there was an increase of 12.32% in the potato cylinders mass but at 2%, the potato cylinders mass decreased to -31.02%. At 5%, the potato cylinders mass decreased -26.65%. There is a negative correlation in the graph. 2-Discuss the reliability if the results when compared to other groups. Use examples. When compared to other groups, the results of the weight change were mildly reliable. For instance, the 2 % solution percentage results for the groups were -32.35%, -30.7% and -30%, these are all similar and so are reliable however n some results, like the 1 5 solution, group 1 had -17.98% and group 3 has -17.7% but group 2 had -32.5%. So, because of these differences the results are not reliable.…show more content…
Systematic errors are errors within the equipment such as measuring cylinders which may not be exact or scales which could be damaged and so give incorrect weights. Random errors are those made by human errors such as having parallax errors distorting measurements, temperatures in the room affecting results or slow reaction times when stopping a stop watch or placing things in solutions. Systematic and random errors can be reduced by many repeats of the whole experiment and then averaging the results and also, decreasing as many variables as possible by using precise
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