# Osmosis

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Experiment with osmosis in carrot tissue Introduction: The aim of this lab is to determine the concentration of solutes in carrot tissue. We sliced a carrot in six pieces each piece measuring about 2mm thick. The six pieces of sliced carrots were then placed in the six different solutes of sodium chloride (NaCl) these solutes have different salt concentration from 0.00%, 0.50%, 1.00%, 2.00%, 3.00% to 4.00%. In each six petri dish is filed with 20ml, this to cover the carrots, six sliced pieces of carrots are then placed to its corresponding solutes. We weighed the sliced carrots before and after the process of incubation. The incubation time was 15 minutes. When these 15 minutes, passed we took them out and place them on some household…show more content…
There was an unfairness in the experiment, as we didn't mange to cut the pieces exactly the same, but these pieces also needed less time so we could feel the texture from there. The carrots that were cut a bit thinner had a more floppy consistence and the surface was softer. Discussion: The aim of this lab is to determine the concentration of solutes in carrot tissue. We had two groups which results seemed irrelevant, thats why I haven't included all of the five groups as the mean would then be very inaccurate. Group one and four had quite some wired results, then group two and three had some anomalous result, but this was because they made an error in the calculation, and we had time to fix it. If you refer to table 2, I think group five has the most relevant answer for our hypothesis, as the two first solutions 0.00 - 0.50% are positive,so it´s a hypotonic solution, then at 1.00% solution the mass has changed 0.00grams so it is an isotonic solution. From 2.00 - 4.00% the solution becomes hyperotonic, meaning that water go out of the cell. Isotonic means that the concentration of solutes is equal inside and outside the cell. Hypertonic solution has occurred on the last three dishes of the experiment, the concentration level is lower outside the cell so water is released and this makes the cell shrink.