Rate of Osmosis on Potato Chips

I have chosen to investigate the effect of the water potential/concentration of solution on potato chips. This means that I will put potato chips into salt solutions of different concentrations. These concentrations would be ones such as these; 0.25mola, 0.5m, 0.75m, 1.0m, 1.25m, 1.50 and distilled water.

There are other factors involved and these are;

¨ Water potential of potato initially

¨ Mass of potato dependent variable

¨ Volume of solution potato chip is in

¨ Use the same balance to measure chip

If I am going to conduct a fair test, then I am going to have to control these other factors. Doing all the tests at one temperature will control the temperature. For the purpose of my experiment I am going to do all the experiments at room temperature.

To keep the water potential of the potato initially will be kept

The average distilled water gains in mass. This means that osmosis takes place and that the water moves from the beaker into the potato. The matches my initial predictions, and fits in with my prediction graph as well. The point where the line crosses the x-axis is the isotonic point. This is where no osmosis is taking place, i.e. no water is moving in or out of the potato. The next point, 0.25 mola looses approximately 4.0g. This shows that the water potential of the salt solution in the beaker is weaker than that of the potato chip. The next, 0.50 m, looses approximately 8.0g in mass. This shows that the salt solution has an even weaker water potential than 0.25 m and that osmosis took place. This is why the potato lost even more mass, and it shows that the water potential in the beaker is less than that of the potato chip. Also that the potato is trying to make the water potential of the fluid on both sides of the semi permeable membrane the same, (osmosis from the potato t!

Some topics in this essay:
Results Distilled, Chips Planning, Chip Potato, Average Distilled, Distilled Water, potato chip, change mass, potato chips, water potential, distilled water, mass mass, salt solution, %change mass 1, mass mass change, 1st attempt, mass %change mass, 2nd attempt, mass 1, change mass %change, mass change mass, Scalpel Paper, Mass Mass, Results Concentration,