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Saturday, March 16, 2019

Investigate how the Concentration of a Sucrose Solution affects the Rat

Investigate how the Concentration of a Sucrose Solution affects the Rate of OsmosisIntroductionDiffusion is the movement of particles from a advanced assiduity to alow concentration until they be turn out out evenly. An exemplification ofdiffusion is when an aerosol is sprayed. The particles spread out fromthe high concentration at the nozzle into the rest of the room andthat is how the smell moves.Osmosis is the modulation of body of water system system molecules from a weaker solution to astronger solution with a partially semipermeable membrane. Osmosis is atype of diffusion involving water - the water molecules move from aweak solution (with a high concentration of water) into a strongsolution (with a low concentration of water).The stallular phone membrane in a prepare electric cell is partially permeable - it hassmall holes that infract the axe let in small molecules but non large ones. Thisallows water through and therefore allows osmosis.When the cell has all t he water it can take inside of it the osmosisprocess stops. The water pushes up against the cell wall which isstrong enough to stop it bursting. The cell is turgid and the workingsneeds turgid cells to give it rigidity and allow it to stand upright.If the cell has not enough water in it, it is flaccid and doesntsupport the plant which goes limp.In order to prepare for my estimate out I did a previous experimentto get an idea of how I would do my real experiment and what apparatusand solutions I would need. I weighed 11 potato chips and put theminto recognize boiling tubes. I filled each boiling tube with a varied concentration of a sucrose solution from 0 molars (water)through to 1.0 molar with 0.1M intervals in between. After 30 minutesI removed(p) the potato chips and measured their mass. I found that thechips in the concentrations of 0M to 0.2M had sum upd in mass andthe rest had decreased in mass. For my experiment I amaze chosen to usefive concentrations of sucrose solu tion - 0.0M, 0.1M, 0.2M, 0.3M and0.4M. I gravel chosen these concentrations for two reasons. Firstly theycover the point at which the increase in mass changes to a decreaseand therefore I can hopefully find the equilibrium where the massstays the same, and secondly they are all at equal intervals so itwill be well-to-do and accurate to draw a graph for my results.PredictionI squall that out of the five potato chips used in the experiment atleast two will... ...tato chipin the solution for different cadence periods. I could then compare thegradients of the lines of best fit for the 5 different eras, and alsodraw graphs for each molarity across the 5 time periods. I could alsodo an experiment using the same concentrations as I did in thisexperiment, but measuring the mass of the potato chips subsequently every 3or 4 hours until the mass stays the same, and jibe how long potatochips in different solutions took to reach a lowest mass and to see howlarge its mass would get. Fina lly I would care to do the sameexperiment as I did here, but try it out on different types of plantsand compare the rates of osmosis of the different plants. This wouldgive an idea of which plants were more efficient at taking up waterand I could see what types of plants had the fastest rate of osmosis,and whether there was a connector between the rate of osmosis in a plantand the habitat it exists in. For example I might find that plantsthat live in hot, dry conditions birth a faster rate of osmosis thanplants which live in cold, wet environments. These experiments would admirer give a better idea of how the rate of osmosis is affected by theconcentration of a solution.

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