Osmosis In Egg Lab Report

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Discussion:
The rate of osmosis decreased as the concentration increased. This is because the egg began with a certain solute concentration and was placed in the distilled water with zero salt concentration, the rate of osmosis into the egg was highest here as it was the largest concentration gradient from the egg to the solution. Therefore the water molecules diffused into the egg through the membrane as moving against the concentration gradient from low to high concentration. As the egg moved into the next solution of higher concentration there was a slower rate of osmosis due to the increase in solute concentration and therefore a lower concentration gradient however there is still an overall net movement of water into the egg. The rate …show more content…

There is also a small standard error of the mean compared to the size of the standard deviation which indicates some uncertainty in the accuracy of the results. The concentrated solutions used may have been contaminated from the source and therefore all collaborated results would be inaccurate due to the solutions not being of the correct percentage concentration of sodium chloride. The results would be inaccurate as they would not be correctly collaborated to the correct concentration in which they are being graphed for. Another systematic error is that the eggs are not all exactly the same size and effects such as surface area to volume ratio can impact how much water enters or exits the egg at any point in time. There was also still traces of shell left on some eggs which would have affected the rate of osmosis as not all membrane was available to be utilised in the diffusion of water. However, a larger sample size will eliminate the effect of this error. The reaction may have not reached equilibrium in the time frame of 10 minutes and this may be needing to be extended. For an equilibrium to be reached between the water and solute in the egg and in the solution. The strength of the experiment included the efficiency in which the practical was completed placing 2 eggs within a solution each at the one time as well as collaborating results with other experimenters in order to achieve an average overall for a larger sample size. Yet it could still be improved by further increasing the sample size of the experiment to counteract and possibly eliminate the effects of errors on the

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