Osmosis Lab

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Kaitlyn Camp 111-501 The Properties of Water; Osmosis and Diffusion Report In the process known as “osmosis”, a solvent will permeate from a solution of low solute concentration to a solution of high solute concentration. Due to this process, there are three terms that are used when describing solute concentrations in a solution relative to another. These terms are: isotonic, hypertonic, and hypotonic. According to the lab manual, isotonic is when “two solutions, separated by a semipermeable membrane and have identical osmotic potentials”. Hypertonic is “the solution with the greater concentration of solute (lower osmotic potential) to another solution” and finally, hypotonic is the solution with the lower concentration of solute relative…show more content…
In the second solution the mixture of distilled water and 0.9% NaCl balanced each other out which lead to an isotonic solution and dynamic equilibrium was reached. This means that the water entering and exiting the blood cell would be equal. And finally, the solution with 1.8% NaCl was hypertonic. When the NaCl was added to the vial, the water, through the process of osmosis, permeated out of the blood cells and into the hypertonic solution, thus creating a cloudy, dark color and a high water potential. The chart demonstrating the different vials and the observations is shown in figure 1…show more content…
We hypothesized that the elodea planted mounted in distilled water would be turgid when placed in the hypotonic solution. The results showed the elodea plant mounted in 0.9% saline solution was similar to that of the 0.50 mL of distilled water and 0.9% NaCl with the blood cells. When mounted on the 0.9% saline, the cell shrunk slightly due to the isotonic solution. And finally, when the elodea plant was mounted on 5% saline, the cell drastically shrunk due to the hypertonic solution. During these two experiments our hypotheses were proven correct. We expected the higher concentration of solute in the solution to pull water from either the blood cells of the elodea cells. It was apparent in both experiments that when the solute concentration of the solution surrounding said blood cell or plant cell was higher, water would permeate through the membrane to the higher concentration of solute. The spontaneous process of osmosis was thus demonstrated through these two

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