in an experiment of osmosis-i found that potato slices left in a 5% sodium chloride left the solution completely clear. when observing the 2%, 0.5% sodium chloride solutions and the distilled water solution they were all cloudy.
is there a reason behind this?
i will be greatful for any helpful answers
thanksWHY DOES THE SOLUTION STAY CLEAR IN ONE AND CLOUDY IN THE OTHER? - OSMOSIS?
The water from inside the potato moves to the salt solution, causing the potato to shrink and to lose its 'turgor pressure'. The more concentrated the salt solution, the bigger the difference in size and weight of the potato slice.
Therefore...more salt concentration outside means...steeper water potential gradient...and therefore more water moved out of the potato which in turn made the solution clear.
Similarly...less concentration of salt solution outside...means less steeper water potential gradient and so less water moved out of the potato slices and therefore it remained cloudy!!!
ALTERNATE ANSWER-
Osmosis is the diffusion of water from an area of high concentration to an area of low concentration, through a ppm (partially permeable membrane).
This particular diffusion was the diffusion of water from an area of high concentration (inside the potato chip) to an area of low concentration (into the volume of salt water in the beaker). The partially permeable membrane in this instance is the cell membrane round each cell.
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