cond weight = 0.50gdivided = 0.50/0.65 =0.77multiplied x 100 = 77difference =-23%When all the differences in mass had been calculated, they were plotted on a graph. Apparatus The apparatus was set out as shown below;ResultsA total of fifteen measurements were made during the investigation, three for each of the sucrose concentrations. This was undertaken to help improve the reliability of the results and prevent any anomalous results giving a false conclusion. On the table below, the average mass lost/gained for each sucrose concentration has been calculated.Sucrose ConcentrationBefore (g)After(g)MassDifference %Before (g)After(g)MassDifference %Before (g)After(g)MassDifference %AverageMassDifference %0%0.630.74+ 170.640.77+ 200.690.81+ 17+1820%0.690.66- 40.670.63- 60.690.67- 3-440%0.680.55- 190.640.52- 190.690.55- 20-1960%0.640.48- 250.650.50- 230.640.49- 23-2480%0.660.47- 290.670.49- 270.660.48-28-28The potato cores left in distilled water have increased in size; they were very firm or turgid, water had diffused into the potato cells by osmosis. The potato cores left in concentrations of sugar solution have decreased in size, they were very soft or flaccid, and water had diffused out of the potato cells by osmosis. ConclusionFrom the results of this investigation, the conclusion may be drawn that the higher the level of sucrose concentration, the more rapidly osmosis takes place.The bar graph above compares the mass difference at the different levels of sucrose concentration. From this graph, we can see that as the sucrose concentration increases, the mass percentage decreases. When this is shown on a line graph, we find that there is a correlation between the results, supporting the conclusion that the stronger the concentration of the solution outside the cell, the faster plasmolysis occurs. The conclusion of this investigation supports the original hypothesis that the potato cores in distilled water will increase in mass and that t...
