The Effect Of Osmosis On The Rate Of Osmosis

Definition of osmosis: The diffusion of water across a selectively permeable membrane from high to low concentrations

Osmosis is a natural occurrence constantly happening within the cells of all living things. For osmosis to occur, water molecules must move across a semipermeable membrane from an area of low concentration to an are of high concentration. In order to understand osmosis, people must understand the different types of concentrations that can be present within solution. One of them is an Isotonic solution where the concentration of dissolved particles is equal to that of a cell’s. Another is a hypertonic solution where there is a higher concentration of dissolved particles then inside the cell. And lastly there is a hypotonic solution where there are less dissolved particles than inside the cell. As dissolved particles move to a region of lower concentration, water moves the opposite direction as a result of there being less water in the highly concentrated region. In this experiment, gummy bears were placed in salt water, sugar water, and tap water to find the measure of osmosis between the solution and gummy bear.

The main purpose of the experiment was to test the idea that water would move from the higher concentration to the lower concentration. In order to test this theory, we placed potato slices in 7 different containers, each containing different concentrations of NaCl, to measure the weight change from osmosis. The containers ranged from 0M NaCl all the way to .6M NaCl. We measured the potato slices before and after placing the slices in the solutions and recorded the net change in weight to determine the tonicity of the potato cells. Our results showed that the potato slices put in a NaCl solution of .2M or higher lost weight and the potato slices put in a NaCl solution of .1M or lower gained weight. This shows that the osmolarity of the potato falls within the range of .1M to .2M, and it also proves the process of Osmosis by having the higher concentration move to the lower concentration. In addition to this, it can be concluded that the osmolarity of cells can be determined by observing the affects of osmosis.

Osmosis is the diffusion of water across a membrane to create an equilibrium between the levels of concentration of a solute both inside and outside the cell. In this case the solute will be sugar as the potato core will be immersed in sucrose solution.

The purpose to this experiment was to study the effect of osmosis in de-shelled chicken eggs in different percentages of sucrose solutions. Osmosis is the process, in which, water moves across a differentially permeable membrane. The eggs were soaked in vinegar to remove the outside hard shell but still leave the egg in its membrane. By placing the six de-shelled in different sucrose solutions, we tested the rate of osmosis. The eggs were placed in the solutions for an hour and weighed in fifteen minute intervals. Then, each weight was recorded and graphed. The results showed that the egg in the water solution gained the most weigh and the only other egg that gained a little weight was the one in the 10% solution. All the other eggs in the different solutions lost weight, even the unknown solution. According to the results the egg that was in the distilled water solution gained weight because it is the hypertonic solution. All the other eggs lost weight because they were placed in hypotonic solutions with different concentrations of sucrose. The egg that was placed in the higher concentration of sucrose lost the most weight. So, the higher the concentration of sucrose, the more water the egg lost.

In this study we constructed we researched whether different sucrose concentrations affect the rate of osmosis. In order to do this, we constructed artificial cells out of dialysis tubing filled with 20% sucrose and 40% sucrose and weighed them every 10 minutes for 90 minutes. In doing so, we concluded that the higher the sucrose concentration, the faster the rate of osmosis.

The concentration of a solute affects the rate of osmosis over time, in a way where, the higher the concentration of a solute, the faster the rate of osmosis. This happens because, in a semi-permeable membrane the water is the only through that can move through. In this case our solute is sugar, and sugar cannot fit through the pores in the membrane. When there is more sugar the difference in concentration is greater. That difference makes all the molecules want to move faster. That results in osmotic pressure being built. The sugar tries to get through the membrane, but the pores don’t accommodate it. That means that the water can only go through less pores because more sugar is blocking the pores. The water that goes through the few pores, ends up clumping up near the open pores and, rushes into the membrane faster. That results in the rate of osmosis being faster.

_An experiment on the effect of surface area to volume ratio on the rate of osmosis of Solanum tuberosum L._

The aim of the sixteenth of November experiments was to observe how three different solutions with various sucrose concentration influenced osmosis in relation to three onion cells and the impact on the cells structure.

Osmosis is the diffusion of a solvent or movement of water through semi-permeable membrane from a region of higher water or solvent into a potential lower region of water (hypertonic solute to a region of lower water potential (hypertonic solute) to a region of lower water potential (hypertonic solute).

if the potato is placed in water then the potato will swell or be soggy if the potato is then placed in a higher salt water concentration then the potato will decrease its volume and mass if it's please in salt water solution then it would shrink the volume and mass when you when you place the beaker it determines the temperature the mass volume even speed on how the potatoes are dissolving or

To start off it would probably be useful to know what osmosis is. It is a process by which molecules of a solvent tend to pass through a semipermeable membrane from a less concentrated solution into a more concentrated one, equalizing the concentrations on each side of the membrane. It is important because a function of osmosis is to maintain an ideal concentration of solute in a cell. Osmosis balances the pressure and concentration of solution on both

Desiree Cottle 10/12/2015 Case study #2: Osmosis Part I Wanting to please his dad Michael added extra fertilizer to their crops of corn thinking it would help the plants grow. However, the plants started dying instead.

Water diffuses across cellular membranes by the process of osmosis. This occurs in all animal, plant and protozoa cells. Furthermore, this report examines ‘an investigation into the rate of osmosis through a semi-permeable membrane’ and further assesses whether this rate is affected by sucrose concentration. Dialysis bags containing variable sucrose concentrations were placed in a solution containing either tap water or 60% sucrose. These bags were then weighed at fifteen minute intervals and then placed back into its allocated solute. In Summary, it was found that bags containing sucrose gained the most weight in comparison to those that contained tap water. The sucrose inside the bags caused the water potential to decrease. Therefore, water moved by osmosis down its concentration gradient towards the area with the most dissolved sucrose.

There are numerous important variables in this experiment that must be controlled in order to achieve the most accurate results. Firstly, the temperature of the solution must be maintained at a constant temperature of 22°C. Higher temperatures cause higher rates of osmosis (Nagel, 2002). Therefore, all trials must have solutions that are maintained at the same temperature to ensure that they all have the same rate of osmosis. This guarantees that the parsnip cylinders will increase by the same masses relative to the