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Essay example - The Effect of Osmosis on Potato Tissue When Placed In Different Concentrations of Sugar Solutions
Pages 2 (502 words)
Osmosis is the spontaneous passage or diffusion of water or other solvents through a semi -permeable membrane (i.e. a membrane that blocks the passage of dissolved substances or solutes).The solvent molecules pass from a region of their higher concentration to a region of their lower concentration through the semi permeable membrane…
Extract of sample
This is in contrast to the potato slice in the first beaker in which only 1 teaspoon of sugar was dissolved and which has shrunk the least. This pilot experiment will now be conducted in a much more accurate fashion and the investigation will deal with sugar in moles per litre of solution and the weight difference of the potato slices will be determined in order to correlate the sugar solution molarity with the change in weight of the potato slice.
Hypothesis- Place potato tissues of the same dimensions and weight and taken from the same potato in sugar solutions of different molarities (a measure of concentration i.e. the number of moles of sugar present in 1 liter of solution), all at the same temperature and pressure, then osmosis takes place and there will be a difference in the weights of potato slices in the different samples.
Materials needed to conduct the experiment- a sharp knife, a weighing balance, 4 beakers, 4 potato slices, sugar solutions of different concentrations of sugar-0.1M, 0.2M, 0.3M and water with no sugar dissolved in it.
(around 68F/20C) and pressure. ...
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