Osmosis and its Effects on Potatoes in Glucose Solutions Mod 19 Abstract Osmosis of water of different molar concentrations was examined by using potatoes as a model.
Get Full Essay Get access to this section to get all help you need with your essay and educational issues. Various Sucrose Concentrations Essay Sample Osmosis is the transport of water across a selectively permeable membrane from a region of a higher water chemical potential to a region of lower water chemical potential.
Tzahi To demonstrate osmosis lab, artificial cells were made with various sucrose concentrations and were placed into beakers of different sucrose solutions. Overall the results showed that the higher percentage of concentration gradient of sucrose, the more the artificial cells absorbed.
The phenomenon being investigated in the lab was how the concentration gradient affects the rate of osmosis in a cell.
Osmosis is the passive movement of water from and area of high concentration, temperature, and pressure. The concentration gradient is the difference in concentration though a solution Concentration Gradient They all affect the rate of osmosis by increasing the gradient of the solution, and increasing the energy in the system.
For this experiment, it is predicted that an increase in solution concentration will cause a proportional change in the rate of osmosis. Creating artificial cells that contained different concentrations of sucrose tested this hypothesis.
In ten-minute increments, the weights of the cells were recorded. Overall a change in weight was found and also the slope to show how much the concentration gradient had on the rate of osmosis. The materials used for the experiment were: To make sure that the dialysis bags stayed durable they were soaked in water for about ten minutes or they softened.
When the bags were ready to be filled with sucrose solution, the bags were clamped on one side and then opened on the other side.
Each bag was then filled with 10 mL of certain solution. Using the other clamp, the bag was sealed tightly to get rid of extra air. The bags were then placed into beakers at the same time and the timer was started for ten minutes.
After each ten-minute increment was done, the bags were taken out, dried off with a paper towel and the weights of the bag were then measured for a total of 90 minutes. Figure 1 At the end of the experiment, it was found that the cells one though four were all hypotonic solutions, meaning that they all gained weight though osmosis and water from the beaker outside of the cell when though the selectively permeable membrane.
Cell number five was found to be hypertonic and lost weight due to the bag also going through osmosis and water in the bag moving from inside the cell through the selectively permeable membrane into the sucrose solution in the beaker surrounding it.
The results from the experiment show that as the concentration of the sucrose solution in the cells increase, that the rate of osmosis also increases.
The results from the experiment support the hypothesis since bags were in a hypotonic solution, they gained weight moving from a higher concentration to low.
The experiment overall showed how concentration gradient affected the rate of osmosis very well. The cells with the higher concentration of sucrose, had a greater rate of osmosis, which shows how the gradient can affect the cell weight and rate of osmosis in both hypotonic and hypertonic solutions, The experiment is evidence for both ways of osmosis.
More essays like this:Abstract: Osmosis is the transport of water across a selectively permeable membrane from a region of a higher water chemical potential to a region of lower water chemical potential.
(Tzahi ) To demonstrate osmosis lab, artificial cells were made with various sucrose concentrations and were placed into beakers of different sucrose solutions. Sep 11, · Through this lab we explore diffusion and osmosis using solutions of varying sucrose concentrations and potato samplings.
Diffusion is the process by which molecules intermingle in random motion as a result of their kinetic energy. An investigation how sugar solutions of different concentrations affect osmosis.
Research Osmosis is the diffusion of water across a partially permeable membrane from . Sep 11, · Osmosis and its Effects on Potatoes in Glucose Solutions Mod 19 Abstract Osmosis of water of different molar concentrations was examined by using potatoes as a model. Osmosis was examined by noting the change in mass of potato slices before and after overnight immersion in varying solute concentrates.
Sucrose concentration factors for forward osmosis at two different draw solution concentrations obtained in this investigation compared to published data with reverse osmosis.
The initial sucrose concentration in the FO experiments was M (10 °Brix) and the temperature was fixed at 30 °C. Sucrose solution will be used in my experiment as this will help me to figure out if osmosis is occurring.
The aim of my investigation is to see how the rate of osmosis is affected by the concentration of the sucrose solution so I will be using different concentration of sucrose solution.